Home / Amazon Arbitrage & FBA Tools / InventoryLab
InventoryLab handles FBA shipment creation, cost tracking and profit reporting, and includes the Scoutify 2 scanning app. It is now sold only as part of the Threecolts Seller 365 bundle. It is popular with retail arbitrage and wholesale sellers who want accurate profit numbers.
| Category | Amazon Arbitrage & FBA Tools |
|---|---|
| Pricing | Included in Threecolts Seller 365 from $69/mo (no standalone plan) |
| Free option | Free trial |
| Price checked | 2026-10-17 (source: threecolts.support (Seller 365 pricing)) |
| Works with | Amazon |
| Best for | FBA sellers who need listing, prep and accounting in one |
InventoryLab is the best fit for: FBA sellers who need listing, prep and accounting in one. If that does not describe you, check the alternatives to InventoryLab; Keepa and Jungle Scout are the most common substitutes in this category.
Retail and online arbitrage on Amazon live and die by data: sales rank, price history, Buy Box competition, fees and ungating restrictions. These tools range from free browser extensions to full research suites. Beginners usually start with one scanner app plus Keepa, and add a sourcing suite once they are consistently profitable.
Included in Threecolts Seller 365 from $69/mo (no standalone plan). Free option: Free trial. Prices change, so confirm on the official site.
FBA sellers who need listing, prep and accounting in one.
Amazon.
Keepa, Jungle Scout, Helium 10, SellerAmp SAS. See the full alternatives list.
Information checked 2026-10-17. Pricing and features change; confirm on the official site.
Flip Profit Calculator ($12)
Spreadsheet that returns net proceeds, max buy price, ROI and a GO / COUNTER / PASS decision with fees for 10 platforms, plus a 500-row flip log and dashboard.
Marketplace Pricing Cheat Sheet ($7)
Fees for 8 resale platforms, max-buy and ROI formulas, comp check, net payout table and shipping reference on 6 printable pages.
Instant digital downloads sold via Gumroad.
Keepa
Free extension; data subscription €29/mo or €290/yr
Jungle Scout
Starter $49/mo, Growth Accelerator $79/mo; $29-$49/mo billed yearly
Helium 10
Platinum $129/mo ($99/mo billed yearly), Diamond $359/mo; Starter plan discontinued
SellerAmp SAS
$19.95/mo (Getting Started), $29.95, $49.95 (Going Pro)
WAMP
Free (beta); WAMP Pro coming soon
Tactical Arbitrage
Only sold in the Threecolts Seller 365 bundle, from $69/mo
Reach resellers actively choosing tools in Amazon Arbitrage & FBA Tools.
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