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

Keepa (~£15/month) is the single highest-value paid tool in UK FBA — price history, sales-rank history and buy-box history for every ASIN. Buy this before anything else. Everything past Keepa is about scanning speed, profit tracking, repricing and sourcing — and that is exactly where the overlap (and the overspend) starts.

Where the money leaks: paying for five things that overlap

A scanner (£20-30), a profit tracker (£15-30), a repricer (£30-100) and a leads source (£30-60) bought separately is £95-£220/month — and they share a lot of the same underlying Amazon data. Consolidating them into one bundled suite is usually the cheapest real-world setup for an active seller. The Inner Circle FBA suite is from £29.99/month, includes the scanner, profit tracker, repricer, inventory tracker and Chrome extension, and adds 50+ daily UK leads instead of charging for them separately. See /tools for current tiers.

A realistic cheapest stack

Brand new and keeping costs to the bone: free Amazon Seller app + our free calculators + Keepa (£15) is about £15/month to start sourcing. When you want deal flow and profit tracking without adding three more subscriptions, a consolidated suite from £29.99/month is cheaper than buying a scanner, tracker, repricer and leads service one by one.