


Margin visibility
See your real profit before anything goes in the buy list. Every Amazon fee – referral, FBA, storage, peak surcharges – calculated upfront so you know exactly what you’re making before you commit.
Plan your buys, build your shipments, manage your stock, and know your true profit – all on the same data.
Trusted by 10,000+ sellers





From margin calculations to shipments, profit tracking to inventory. All running on the same data.



See your real profit before anything goes in the buy list. Every Amazon fee – referral, FBA, storage, peak surcharges – calculated upfront so you know exactly what you’re making before you commit.




From buy list to box label without touching Seller Central. Manage MSKU generation, inbound plans, and box content labels in a five-stage guided process.
See what you’re actually making – by product, supplier, or category. These are your day-to-day profit numbers.



All your stock in one place. FBA, merchant-fulfilled, and unlisted inventory tracked together, all on the same underlying records as your shipments and profit data.
InventoryLab replaces the whole Seller Central shipment process with a guided workflow that gets inventory out the door faster and with fewer errors.
Most sellers run multiple tools that never quite talk to each other. InventoryLab starts with one record and carries it through every stage. From the first buy decision to the final settlement – it’s all the same data.
Connect Your Workflow Connect Your WorkflowInventoryLab models every fee at the unit level so your profit number is accurate from the moment you list to the moment Amazon settles.
Tier-based FBA fee modelling. Peak rates, non-peak rates, variable closing fees, lithium battery surcharges, and storage — all calculated at the unit level.
Automated reconciliation. Every fee, refund, and adjustment from your Amazon settlements processed automatically.
Multi-dimensional P&L. Your profit by SKU, ASIN, supplier, category, or fulfilment channel — same numbers, every lens.
Whether you’re just starting out or running a serious volume operation, the workflow scales with you.
Get StartedGet Started
Getting started with FBA means learning a lot at once.
InventoryLab gives you a guided shipment workflow, automatic fee calculations, and a P&L that tells you what you’re actually making, so you’re not piecing it together from spreadsheets on day one.

You’ve outgrown the spreadsheet and need something more robust.
InventoryLab handles your sourcing decisions, FBA shipments, and multi-dimensional P&L in one place, so you stop switching between apps and start trusting your numbers.

Volume means supplier margins, reorder timing, and per-unit accuracy matter more.
InventoryLab tracks P&L by supplier, models fees at unit level, and keeps replenishment on schedule. Prep centres use it too.
“InventoryLab was a no brainer! We wasted so much time our first 6 months shipping through Seller Central and pulling our hair out every time! InventoryLab allowed us to have SMOOTH workflows and saved so much time on shipments.”
Seller 365 covers every stage of your Amazon business – from the first sourcing scan to your final profit report.
Explore Seller 365 Explore Seller 365Discover millions of profitable products to resell on Amazon.

Scan books, spot profits, sell fast — right from your phone.


Scan smarter and source faster with instant retail arbitrage insights on the go.


See any Amazon product’s ROI, sales rank, and fees instantly with one click.

Prep, box, and ship products faster while reducing errors — all in one powerful app.

Automate review and feedback requests on Amazon to boost ratings.

Monitor every data event across all your accounts and listings 24/7.

Automate your Amazon pricing, keep the Buy Box, and increase your sales.

View and analyze your financial metrics on one simple screen.

Track your buy and sell prices, shipping fees, refunds, mileage, and supply costs.

The full Seller 365 suite has seriously streamlined my workflow — repricing is automated, listing is easy, and my average selling price has gone up 7%.
I really love the all-in-one package of programs, which makes Amazon selling so much simpler. Thank you Threecolts!
Since discovering Tactical Arbitrage and InventoryLab, now part of the Seller 365 bundle, our Amazon business has completely transformed.
The platform took me from logging into 4 different vendors to one website which made life a ton easier.
Tactical Arbitrage AI matching is absolutely amazing. Helped me a lot to grow my Amazon business. Unrivalled accuracy and a plethora of tools to help sellers.
The team at Threecolts are really knowledgeable and set me up brilliantly. Do not hesitate to begin a subscription.
I love the new update where you’ve combined a bunch of softwares for the price of 1. This is ultimately a game changer in the industry.
We found that Seller 365 was way better and faster than our in-house team.
Inventory Lab helps us keep clear track of our P&L, inventory levels, and creating Amazon shipments. Tactical Arbitrage saves us so much time with sourcing.
Normally things we do without this application would take a lot of hours, but it speeds up the process perfectly.
I’ve had a great experience with all their tools since 2019. I used to pay a few hundred dollars before the Seller 365 bundle came out, and now it’s a no brainer.
Inventory Lab was a great tool for keeping track of all things Amazon. If I ever dive back into selling on Amazon, you guys will be my first stop!
Threecolts has a fantastic collection of industry-leading resources for Amazon sellers. Their team understands Amazon — they adapt to the needs of sellers.
We have the top 365 package. We love how the team listens and helps solve problems. Everyone has been so professional and polite.
The suite of tools has significantly streamlined our processes. Since integrating Threecolts, we’ve seen a noticeable boost in productivity and profitability.
It has a simple and useful interface. Simple to learn, user friendly. It makes the work more fluent by making connections with Amazon.
I’ve used many similar software products, and this one is truly my favorite. So well done, good user experience, great training materials, quick and thoughtful customer service.
I was surprised to see what Inventory Lab has become. It is now a suite of softwares that offer more value than the individual softwares I have been using.
Get the full listing, shipment, and profit workflow today inside Seller 365 – 10 powerful apps for the price of 1. Choose a plan to start your free trial.
For independent resellers
sourcing profitable products.
For growing reseller businesses
operating with a team.
For high-volume resellers
operating at scale.
Selling beyond Amazon? Add UniCon to any plan.
Sync the catalog, inventory, and orders you already run to the marketplaces that matter most — all from one dashboard, without splitting your focus.
More than 10 users, or need custom terms? We'll build the plan around your team.
Talk to salesTalk to salesStandard $6965/mo | Teams $129119/mo | Pro $199183/mo | |
|---|---|---|---|
| Sourcing | |||
Discover millions of profitable products to resell on Amazon. | |||
| Searches at once Number of searches you can run at the same time | 7 | 10 | 10 |
| Scheduled searches Number of searches you can queue to run automatically | 30 | 30 | 40 |
| Result limits Maximum number of products saved per search type. Wholesale limits are 50k, 50k, and 100k respectively | 25k | 25k | 50k |
| Advanced sourcing tools Includes Reverse Search, Wholesale Search, and Product Finder across 1,400+ retailers. | |||
| Sourcing | |||
Scan books, spot profits, sell fast — right from your phone. | |||
| Mobile book scanning Scan barcodes and instantly check profitability using Amazon data. | |||
| Real-time price data Uses live Amazon pricing to calculate profit, ROI, and fees. | |||
| Offline scanning Download the database to scan items without an internet connection. | |||
| Sourcing | |||
Scan smarter and source faster with instant retail arbitrage insights on the go. | |||
| Mobile sourcing Scan barcodes or search products to get real-time Amazon data on the go. | |||
| Profit insights Includes profit calculations, ROI, fees, and sales history insights. | |||
| Product alerts Get notified when products match your buying criteria. | |||
| Risk checks Includes restriction checks and hazmat (dangerous goods) alerts. | |||
| Integrations & workflows Includes buy list integration and research shortcuts like eBay, CamelCamelCamel, and BookScouter. | |||
| Sourcing | |||
See any Amazon product's ROI, sales rank, and fees instantly with one click. | |||
| Product analysis See ROI, fees, sales rank, and Buy Box data for any Amazon product | |||
| Live data insights Access real-time sales and pricing data directly from Amazon | |||
| Variation comparison Compare product variations like size, color, and price to find the best option | |||
| Competitor insights View competing sellers, pricing, and fulfilment methods | |||
| Prep, box, ship | |||
Prep, box, and ship products faster while reducing errors — all in one powerful app. | |||
| Inventory, FBA & shipments Create listings, manage FBA shipments, and track inventory across Amazon and your local stock with real-time updates. | |||
| Reporting & analytics Detailed reports on sales, profitability, inventory performance, and taxes across products, suppliers, and marketplaces. | |||
| Product sourcing Includes access to Scout, InventoryLab's built-in product research tool | |||
| Restock insights Know when and how much inventory to reorder based on sales trends and stock levels | |||
| Win the Sale | |||
Automate your Amazon pricing, keep the Buy Box, and increase your sales. | |||
| Listings managed Number of active listings you can automatically reprice across all connected Amazon marketplaces | 5,000 | 5,000 | 50,000 |
| Real-time repricing Automatically updates prices based on competitor activity, Buy Box changes, and market conditions | |||
| Pricing strategies & rules Use pre-built strategies or create custom rules tailored to your pricing goals and marketplace conditions | |||
| Automation workflows Set advanced conditions based on stock levels, time of day, FBA status, and competitor behaviour | |||
| Bulk operations Upload and update multiple listings at once using spreadsheets to manage pricing at scale | |||
| Profit & pricing insights Calculate profit margins, fees, and shipping costs to ensure every price remains profitable | |||
| Reporting & dashboards Track pricing performance, sales trends, and profitability with real-time dashboards and reports | |||
| Integrations Sync with SellerRunning and InventoryLab to optimise pricing across your full inventory and workflows | |||
| Win the Sale | |||
Automate review and feedback requests on Amazon to boost ratings. | |||
| Emails per month Number of automated review and feedback emails you can send each month | 5,000 | 5,000 | Unlimited |
| Marketplaces supported Number of Amazon marketplaces you can connect and send review requests from | Unlimited | Unlimited | Unlimited |
| Email automation Automatically send review requests using Amazon's Request a Review feature or custom campaigns with flexible scheduling | |||
| Targeting & optimisation Target specific customers and products to improve response rates and maximise review volume | |||
| Reporting Manage orders, feedback, and campaigns from one dashboard with downloadable reports | |||
| Compliance Use Amazon-compliant templates and automatically exclude risky or blacklisted buyers | |||
| Integrations Includes Walmart Order Manager to track and manage orders alongside Amazon | |||
| Win the Sale | |||
Monitor every data event across all your accounts and listings 24/7. | |||
| Monitored listings Number of product listings (ASINs or Walmart SKUs) you can track with alerts across your accounts | 100 | 100 | 500 |
| Alerts coverage Monitor listing changes, account health, suppression status, and key product data across Amazon | |||
| AI-powered review summaries Track customer reviews with filtering and AI-powered summaries to quickly identify trends and issues | |||
| Listing protection Get alerts for hijackers, Buy Box changes, and competitive activity on your listings | |||
| Reporting Receive automated daily reports and export alert data via email or Slack | |||
| Marketplace insights Includes Walmart review alerts and cross-marketplace monitoring | |||
| Profit Management | |||
View and analyze your financial metrics on one simple screen. | |||
| Order limit Number of orders you can process and analyse for profitability across your connected marketplaces | 5,000 | 5,000 | Unlimited |
| Profit insights View key business metrics including revenue, profit, fees, refunds, and overall performance in one dashboard | |||
| Cost & expense tracking Track cost of goods, marketplace fees, and custom expenses to calculate true profitability | |||
| Multi-marketplace analysis Combine and compare profitability data across Amazon and Walmart in one unified view | |||
| Advertising insights Include Amazon PPC and advertising costs for a fully loaded profit and loss calculation | |||
| Profit Management | |||
Track your buy and sell prices, shipping fees, refunds, mileage, and supply costs — to name a few. | |||
| Automated financial tracking Automatically sync sales, reimbursements, and transactions with regular updates and reconciliation | |||
| Accounting accuracy Uses Amazon Finance API and settlement reports to ensure accurate, up-to-date financial data | |||
| Financial monitoring Track all financial activity including sales, refunds, and reimbursements | |||
| Expense tracking Monitor Amazon fees, shipping and storage costs, and add custom expenses for a complete financial view | |||
| Recovery | |||
Recover the money Amazon owes you for lost, damaged, and overcharged inventory — audited and filed automatically. | |||
| Claim coverage Lost, damaged, unreturned, and overcharged units — every eligible claim type covered. | |||
| Automated filing Claims identified and filed on your behalf. No manual case work. | |||
| Transparent tracking Every claim and status update visible in one dashboard. | |||
| Commission on recovered funds Percentage taken only on funds successfully recovered. Drops to 5% on the top plan. | 15% | 15% | 5% |
| Multichannel | ADD ON | |||
Sync the catalog, inventory, and orders you already run to new marketplaces from one dashboard. | |||
| Add-on pricing Monthly price for the UniCon multichannel add-on at each tier, on top of your reseller plan. | $49 | $89 | $449 |
| Channels supported List and sell across Shopify, Amazon, Walmart, TikTok Shop, Ebay, Temu, Shein, and Target+. | 8 | 8 | 8 |
| Multichannel orders/mo Number of multichannel orders processed per month across connected channels. | 500 | 1,000 | 5,000 |
| Active listings synced Number of active listings kept in sync across connected channels. | 500 | 1,000 | 5,000 |
| Central catalog List once and sync everywhere — no rebuilding your catalog per marketplace. | |||
| Real-time inventory sync Sell your last unit on one channel and every other channel updates immediately. | |||
| Smart order routing Incoming orders from every channel routed to the right warehouse automatically. | |||
| AI attribute mapping Each marketplace requires different data fields. AI handles the translation automatically. | |||
| Get StartedGet Started | Get StartedGet Started | Get StartedGet Started | |
For independent brand owners
building their presence.
For growing brands expanding
across catalog and channels.
For established brands operating
at scale across marketplaces.
Selling past 10,000 orders a month, or need terms built around your operation? Let's build the right setup together.
Brands 1K $179149/mo | Brands 5K $599499/mo | Brands 10K $1,199999/mo | |
|---|---|---|---|
| Growth | |||
Sync the catalog, inventory, and orders you already run to new marketplaces from one dashboard. | |||
| Channels supported List and sell across Shopify, Amazon, Walmart, TikTok Shop, Ebay, Temu, Shein, and Target+. | 8 | 8 | 8 |
| Multichannel orders/mo Number of multichannel orders processed per month across connected channels. | 1,000 | 5,000 | 10,000 |
| Active listings synced Number of active listings kept in sync across connected channels. | 1,000 | 5,000 | 10,000 |
| Central catalog List once and sync everywhere — no rebuilding your catalog per marketplace. | |||
| Real-time inventory sync Sell your last unit on one channel and every other channel updates immediately. | |||
| Smart order routing Incoming orders from every channel routed to the right warehouse automatically. | |||
| AI attribute mapping Each marketplace requires different data fields. AI handles the translation automatically. | |||
| Protection | |||
Monitor every data event across all your accounts and listings 24/7. | |||
| Monitored listings Number of product listings (ASINs or Walmart SKUs) you can track with alerts across your accounts | 1,000 | 5,000 | 10,000 |
| Alerts coverage Monitor listing changes, account health, suppression status, and key product data across Amazon | |||
| AI-powered review summaries Track customer reviews with filtering and AI-powered summaries to quickly identify trends and issues | |||
| Listing protection Get alerts for hijackers, Buy Box changes, and competitive activity on your listings | |||
| Reporting Receive automated daily reports and export alert data via email or Slack | |||
| Marketplace insights Includes Walmart review alerts and cross-marketplace monitoring | |||
| Pricing | |||
Automate your Amazon pricing, maximise margins, and increase your sales. | |||
| Listings managed Number of active listings you can automate pricing on across all connected Amazon marketplaces | 1,000 | 5,000 | 10,000 |
| Real-time repricing Automatically updates prices based on competitor activity, Buy Box changes, and market conditions | |||
| Pricing strategies & rules Use pre-built strategies or create custom rules tailored to your pricing goals and marketplace conditions | |||
| Automation workflows Set advanced conditions based on stock levels, time of day, FBA status, and competitor behaviour | |||
| Bulk operations Upload and update multiple listings at once using spreadsheets to manage pricing at scale | |||
| Profit & pricing insights Calculate profit margins, fees, and shipping costs to ensure every price remains profitable | |||
| Reporting & dashboards Track pricing performance, sales trends, and profitability with real-time dashboards and reports | |||
| Reviews | |||
Automate review and feedback requests on Amazon to boost ratings. | |||
| Emails per month Number of automated review and feedback emails you can send each month | 1,000 | 5,000 | Unlimited |
| Marketplaces supported Number of Amazon marketplaces you can connect and send review requests from | Unlimited | Unlimited | Unlimited |
| Email automation Automatically send review requests using Amazon’s Request a Review feature or custom campaigns with flexible scheduling | |||
| Targeting & optimisation Target specific customers and products to improve response rates and maximise review volume | |||
| Reporting Manage orders, feedback, and campaigns from one dashboard with downloadable reports | |||
| Compliance Use Amazon-compliant templates and automatically exclude risky or blacklisted buyers | |||
| Integrations Includes Walmart Order Manager to track and manage orders alongside Amazon | |||
| Analytics | |||
View and analyze your financial metrics on one simple screen. | |||
| Order limit Number of orders you can process and analyse for profitability across your connected marketplaces | 1,000 | 5,000 | Unlimited |
| Profit insights View key business metrics including revenue, profit, fees, refunds, and overall performance in one dashboard | |||
| Cost & expense tracking Track cost of goods, marketplace fees, and custom expenses to calculate true profitability | |||
| Multi-marketplace analysis Combine and compare profitability data across Amazon and Walmart in one unified view | |||
| Advertising insights Include Amazon PPC and advertising costs for a fully loaded profit and loss calculation | |||
| Recovery | |||
Recover the money Amazon owes you for lost, damaged, and overcharged inventory — audited and filed automatically. | |||
| Claim coverage Lost, damaged, unreturned, and overcharged units — every eligible claim type covered. | |||
| Automated filing Claims identified and filed on your behalf. No manual case work. | |||
| Transparent tracking Every claim and status update visible in one dashboard. | |||
| Commission on recovered funds Percentage taken only on funds successfully recovered. Drops to 5% on the top plan. | 15% | 15% | 5% |
| Get StartedGet Started | Get StartedGet Started | Get StartedGet Started | |