Fees and real margin
What each fee actually costs, why Seller Central's sales figure is not your profit, and how VAT lands on the whole thing. Pairs with Performance and the FBA calculator.
Straight answers to the things sellers actually search.
Not a blog. There is no posting schedule to keep and nothing here is written to fill one. Each page answers one question a UK Amazon seller has typed into a search box, in as few words as the answer honestly takes, and gets updated when the answer changes rather than when the calendar says so.
No sign-up, no email wall. Every page here is readable without an account.
Featured
Amazon charges VAT on its fees. What that costs depends on you.
Do I pay VAT on Amazon seller fees in the UK?
Yes, 20%, since August 2024 — and whether it costs you anything depends on your VAT position. The same unit worked through registered, not registered and on the Flat Rate Scheme, where the answer surprises most sellers.
Read it
Every answer
All of them, oldest question first.
FNSKU labels after March 2026 Prepare new shipments, check existing stock separately and count the prep cost. Updated 7 October 2026.
Is there a genuinely free Amazon repricer? Amazon includes one, and Eve reprices 10 active SKUs on a permanent FREE plan. Compare limits, trials and paid prices.
What seller software is actually free in the UK? Job by job: what costs nothing, what is a trial in disguise, and the two jobs with no free option at all.
Can you track Amazon profit for free? Three ways, and the question that separates a real profit figure from a category-average estimate.
Why do my Amazon FBA fees increase when I raise my price in the UK? The £10 and £20 thresholds, category exceptions and worked price comparisons — including VAT.
Why am I not winning the Amazon Buy Box with the lowest price? The July 2026 UK change, total-price comparisons and checks to make before lowering your price.
What should I set as my minimum price on an Amazon repricer? Break-even worked through on one SKU, why one subtraction gets it wrong, and what to add above it.
Do I pay VAT on Amazon seller fees in the UK? 20% since August 2024. What it costs per unit registered, not registered and on the Flat Rate Scheme.
Why is my Amazon payout less than my sales? Money held or money never earned — how to tell the two apart before opening a case.
ROI or margin: which should I judge a supplier list on? Four lines, one budget, three rankings that disagree — and the one that follows the cash.
What are Amazon UK's 2026 handling time and delivery changes? 15 July, 1 September, 30 September and 30 October, what each one does and what to check.
Should a new Amazon seller choose Individual or Professional? £0.75 an item against £25 a month, the 34-item break-even, and why seller tools need Professional.
EVE vs RepricerExpress: which Amazon repricer fits? £79 a month for 1,000 SKUs against a free allowance and an unlimited £99 plan.
EVE vs Sellerboard: which fits your Amazon business? PPC and email tools from $19 a month, or free profit analytics with repricing.
EVE vs SellerAmp: which sourcing tool fits? One product at a time from £13.95, or a whole supplier list priced at once.
What gets covered
Five areas, and the questions that come with each.
The Buy Box
How it is decided, why you lost it, and how to set a floor and ceiling you will not regret at 2am. Pairs with Repricing.
Barcodes and labelling
ASIN, SKU, FNSKU and EAN without the hand-waving, plus box content and prep requirements that decide whether a shipment is received cleanly. Pairs with Workflows.
Sourcing arithmetic
ROI against margin, what a supplier list has to clear to be worth buying, and the costs people leave out until the stock arrives. Pairs with Scout.
Catalogue hygiene
Why listings go missing from reports, where cost of goods has to live for the numbers to mean anything. Pairs with Catalogue.
Written by people who ship it
Every page here is written against software that talks to Amazon's Selling Partner API daily. Where we are unsure, the page says so and points at Seller Central rather than guessing on your behalf.
Also free, also no account
Tools you can use right now.
Reading about it is slower than looking at yours.
Connect Seller Central and the fees, margins and Buy Box positions on these pages become your own numbers. Catalogue, profit analytics and repricing for 10 active SKUs are free; STARTER adds unlimited real-time repricing, Scout and Workflows.