Ecom Seller Toolkit — 4 Offline Calculators for Cross-Border Sellers

Four calculators I use on every product launch — bundled at $39 instead of $54.

1. LandedCost — work out the true landed cost per unit before you wire money: unit price, freight, insurance, duty %, import fees, VAT and FX in one number. Then price for a target margin, find your break-even volume, and rank a list of supplier quotes (export to CSV).

2. ShopFee — see the real profit per order. Breaks down platform fees, payment fees, product cost, shipping and ad spend into net profit, margin, ROI and break-even price. 7 platform presets (Etsy, Amazon, eBay, Shopify, TikTok Shop, Gumroad, Payhip) plus custom. Batch mode for your whole catalogue.

3. AdMath — find the ACOS your margin can actually afford (your break-even ACOS), your max CPC, and get a RAISE / KEEP / LOWER / PAUSE verdict for every search term in your report. Export the bid plan as CSV.

4. StockPilot — turn your sales rate, supplier lead time and safety stock into a reorder date, a suggested order quantity and the cash it needs. Batch mode covers a full catalogue.

Every tool is a single HTML file that runs offline: no account, no install, no tracking. Your numbers never leave your machine. Works in any modern browser, currency-neutral.

In the download:

- EcomSellerToolkit/ folder with all 4 tools

- each tool has index.html, a README and a sample data file

- LICENSE.txt per tool (single-user commercial licence)

- README.txt with the 4-tool overview

Who it is for: Amazon FBA / Etsy / Shopify / TikTok Shop sellers, importers, dropshippers and small wholesalers who want to stop pricing off the invoice and start pricing off the numbers.

Notes: these are planning and calculation tools, not customs, tax, legal or financial advice. Platform fee presets are approximate — confirm rates in your own dashboard.