Amazon Seller Tools Explained: Sourcing, Research, Repricers

Amazon seller tools do the research and busywork that reselling on Amazon takes: finding products to buy, checking their price history, working out fees and profit, adjusting prices and tracking inventory. This guide explains each kind of tool, what well-known examples cost in 2026, and which are worth paying for first.

Prices below are starting prices from each tool's own site, checked in October 2026. Most tools also have higher tiers, annual discounts and free trials, and they change their plans often.

Price history and sales rank#

Before buying anything to resell, you want to know what it has actually sold for and how fast it sells. Keepa is a widely used tool for this: it tracks Amazon price history and sales rank, sends price-drop alerts, and adds charts to Amazon product pages through a browser extension. Keepa Pro costs €29 a month including VAT.

Many other tools build Keepa-style charts into their own screens.

Profit calculators and sourcing tools#

These tools answer one question: if I buy this item at this price, what's left after Amazon's fees? Some also search retail sites for items to buy.

Tools are listed alphabetically; sources for each are below the guide. The cheapest way in is usually a browser extension that shows profit on the Amazon page you're already looking at, such as SellerAmp or RevSeller. Scanners that search hundreds of retail sites cost more and suit sellers doing online arbitrage at volume. Our guide to online and retail arbitrage explains how that works and its risks.

Product research suites#

Product research suites help sellers who create their own listings or brands: they estimate sales, research keywords and track competitors.

For resellers who only list on existing product pages, these are usually optional.

Repricers#

A repricer changes your prices automatically within limits you set, usually to compete for the Buy Box (the "Add to Cart" spot on a product page). Set a minimum price for every item, so a price war can't push you below your costs.

Profit analytics and operations#

Once you're selling regularly, you need to know your real profit after every fee, refund and ad, and to keep shipments and inventory organized.

Sellerboard offers a one-month free trial with no card required. Threecolts also sells Tactical Arbitrage and its other seller apps together in a bundle, Seller 365, from $69 a month.

Refund terms differ a lot#

Check the refund policy before you subscribe:

• RevSeller: a full refund within 5 business days of payment.
• Boxem: a full refund within 7 days.
• AMZScout: a 10-day money-back guarantee.
• ScanUnlimited: no refunds or credits for partial months.
• Keepa: cancel any time; access runs to the end of the paid period, with no pro-rata refunds.

Free trials are the safest way to test a tool. Put a reminder in your calendar before the trial ends.

What to buy first#

A sensible starting kit for a new reseller:

1. A price-history tool, usually Keepa, so you never buy blind.
2. A profit calculator or browser extension, so you see Amazon's fees for each item before you buy.
3. Later, as you grow: a sourcing scanner if you do online arbitrage at volume, then a repricer and profit analytics once you have many listings.

Our guide to FBA vs FBM explains the fees these tools calculate.

Tools and services to avoid#

Some products sold to Amazon sellers break Amazon's rules or are outright scams:

• "Done-for-you" Amazon stores promising passive income. The FTC has sued sellers of these schemes: in one case, it alleges Ascend Ecom falsely promised AI-powered stores would earn thousands a month and took at least $25 million from consumers.
• Ungating services that supply invoices. Amazon's approval for restricted brands and categories requires real invoices from a manufacturer or distributor. A service selling invoices puts your account at risk. Tools that only check your eligibility and open Amazon's own request page are a different thing.
• Review or ranking services, which break Amazon's rules on manipulating reviews and search.
• Seller accounts for sale, and "guaranteed" account reinstatement.

OOSClub doesn't list any of these. Our guide to buying on Whop covers how to check a seller before you pay, and our guide to reseller taxes explains how tool subscriptions count as business costs.

Before paying for a course to go with these tools, read our guide to spotting Amazon FBA course scams.

Amazon tools on OOSClub#

The Amazon FBA & FBM niche lists these tools by type, with what each says it does, its plans, refund terms and the date we last checked them. Tools are ordered by neutral criteria; affiliate deals never change the order.