Product updates — Verimargin

Every release, what changed, and why. Accuracy fixes print first — that's the product. Ledger key: accuracy · new · fix

Next release

in the works

Parse Amazon's new product-overview dimension format (quote-suffix, e.g. 46.05"D × 23.05"W) so fees stay computed from real package dimsaccuracy
Direction-neutral warning when only item dimensions are available — unfolded dims on folding products can overstate fees, not just understate themaccuracy
Two-tone wordmark in the overlay header, matching the popup and the sitefix

1.0.1

2026-07-23

Fee-schedule staleness banner: if our rate table falls behind Amazon's published schedule, the overlay says so instead of asserting stale numbersaccuracy
"Report a wrong number" link in the overlay footer — a pre-filled report with the ASIN and versions; nothing is sent until you send the emailnew
Overmax size-tier handling: items past the Large Bulky limits now get the correct Overmax fulfillment fees (and honest handling when weight is unknown)accuracy
Hardened staleness date checks — invalid or future fee-schedule dates fail honest, never silently freshfix

Also in this cycle: the fee table is now re-verified against Amazon's published schedule every month, automatically, and releases ship with that verification gate.

1.0.0

June 2026

Launch: real-time FBA fee, profit, margin & ROI overlay on Amazon product pagesnew
Referral fees computed with Amazon's marginal "portion of price" brackets — the part most calculators flatten and get wrong by dollarsaccuracy
Fulfillment by size tier, monthly storage, and the 3.5% fuel & logistics surcharge as its own line — matching how Amazon actually billsaccuracy
Pencil vs. ink: estimated numbers print in pencil with a ~, never asserted as factaccuracy
Your cost (COGS) remembered per product — stored only in your browsernew
Light/dark/auto themes; quick links to Keepa, CamelCamelCamel, Seller Centralnew