What is the cheapest Amazon FBA software for UK sellers?

Cheapest does not mean free — it means the lowest total cost to actually make sourcing decisions and track profit, without paying twice for the same feature. Most UK sellers overspend not because any one tool is dear, but because they stack five subscriptions that each do a slice of the job.

Start with the free essentials

The Amazon Seller app is free: live in-store scanning, restriction checks, and a quick fee estimate. Our free UK FBA fee calculator at /fba-fee-calculator uses live Amazon data and handles both VAT-registered and non-VAT-registered maths. Our free BSR sales estimator at /bsr-calculator turns a sales rank into an estimated monthly unit figure across UK categories. Our bulk Catalogue Scanner is free for a batch of ASINs. A Google Sheet handles your bookkeeping until you are past roughly £100k turnover. None of that costs a penny.

The one paid tool worth buying first

For most sellers it is no longer Keepa in isolation — Inner Circle's Leads tier (£29.99/month) already includes the Companion Chrome extension, which shows a live price/BSR chart and a profit/margin verdict directly on the Amazon page, plus 150+ daily UK leads on top. That covers the everyday reason most sellers buy Keepa (£15/month) in the first place. Keep a standalone Keepa subscription specifically if you need multi-year, multi-region history or raw API access — genuine strengths it still has.

Where the money leaks: paying for things that overlap

The bulk Catalogue Scanner, Profit Tracker, Repricer and Inventory Tracker sit on Tools Suite (£69.99/month) — a scanner (£20-30), a profit tracker (£15-30) and a repricer (£30-100) bought separately elsewhere is £65-£160/month before a leads source is even added, and they share a lot of the same underlying Amazon data. Tools Suite bundles all four plus 150+ daily UK leads for £69.99/month, and if your needs stop at on-page profit checks and a chart, Leads (£29.99/month) covers that on its own. See /tools for current tiers.

A realistic cheapest stack

Brand new and keeping costs to the bone: free Amazon Seller app + our free calculators + Leads (£29.99/month, which already includes the Companion's chart and profit verdict) is a genuinely light starting stack. When you want the bulk scanner, dedicated profit-tracking dashboard, and automated repricer on top, Tools Suite at £69.99/month is cheaper than buying a scanner, tracker, repricer and leads service one by one.