eBay Seller Toolkit

Profit calculator, AI listing-title optimizer (uses your own AI key), and sold-price checker for eBay sellers.

Selling on eBay? Price smarter and write titles that get found. Profit calculator Enter your sale price, shipping, costs and category — instantly see eBay's estimated final value fee, your net profit and margin %. Built on eBay's published 2026 fee schedule, with a clear estimate disclaimer. AI title optimizer (your own AI key) Paste a working title, get five eBay-optimized titles (80 characters max, keywords front-loaded, no spammy hype). Uses YOUR OWN AI key with any OpenAI-style AI service — your key stays on your device, and you pay your AI provider directly (typically cents per hundred titles). One-click copy. Sold-price checker One click opens eBay's sold-listings search for your keywords, so you can price against what items actually sold for — no scraping, just eBay's own page. Private by design No account, no analytics, no tracking. Your AI key never leaves your browser except to reach the AI service you chose. No automation, no bots — fully compliant with eBay's rules. Fee figures are estimates based on eBay's published 2026 US fee schedule (non-store sellers). eBay changes fees — always confirm on eBay's official fee page before pricing.