ArbitrageOne

A1 Analyzer gives you the sourcing answer: is this product profitable? It checks ROI, margin and the fees used in the calculation for each marketplace before you spend money. The Chrome extension puts the same check on Amazon listing pages, so you can read the numbers while you browse instead of switching to a separate app. Reviews and Keepa data sit alongside the result, which speeds up the go or no-go call.

The Purchases module holds orders, gross and net prices, discounts, invoices and quantities. You record both gross and net purchase prices, attach invoices and status, and import Amazon Business orders directly rather than typing them in. That single record then follows the product through listings, prep and analysis, so you enter data once and reuse it.

When you buy stock, A1 handles the handoff to selling. It creates listings for supported marketplaces, generates FNSKU labels, and passes SKU, quantity and notes to your prep process. Goods status tracks what is ordered, received and forwarded, so you can see where any unit sits at a glance. If you work with a prep centre, the partner gets the data it needs to match the delivery to the purchase.

ProfitTracker shows what is left after your costs. It evaluates profit using the costs you recorded, broken down by day, ASIN, marketplace and order. Alongside profit you get ROI, margin and return rate, so you can separate a product that looks good on revenue from one that actually pays. This is the module that answers the question most arbitrage sellers struggle with: which products earn their keep.

The tool watches the leaky parts of an Amazon business. It monitors return rates by ASIN, tracks return mismatches and damaged-on-arrival units, and flags FBA loss that could qualify for a reimbursement claim. The FBA shipments view compares shipped against received units and surfaces discrepancies and missing units, with support for opening cases against them.

Purchase analysis compares categories and sources by volume, profit and ROI, so you can see which suppliers and product categories work for you. Expense management records fixed and recurring costs that feed the profit calculation, and payout requests are tracked by interval and marketplace. Together they close the loop between what you buy and what you keep.

A1 keeps prices, margins and inventory for Germany, France, Italy, Spain and the UK in one shared view. You compare a product across marketplaces before you buy, see approvals and restrictions per market, and keep one data foundation instead of five disconnected spreadsheets. For sellers expanding beyond a single Amazon storefront, that consolidation is the main draw.