VaultSeller — eBay Seller Tools

Profit calculator, price history, competitor analysis & listing optimiser for eBay sellers.

VaultSeller is the free alternative to Terapeak, ZIK Analytics, and Salecalc for eBay UK sellers. It lives directly inside eBay — no switching tabs, no subscription required for core features — and gives you powerful tools that eBay Seller Hub doesn't include. Version 2.0 adds five major new features: AI listing generator, VeRo brand checker, shipping calculator, bulk actions and real eBay analytics. --- 🤖 AI LISTING GENERATOR Paste your current title, hit Generate. Claude AI writes an SEO-optimised title (up to 80 characters, front-loaded keywords) and a persuasive 3–5 sentence description — directly on the eBay listing create and edit page. Applies to the form with one click. • Free: 5 generations per month • Pro: Unlimited --- 🛡️ VERO BRAND CHECKER Checks your listing title against 150+ brands in eBay's Verified Rights Owner (VeRo) programme before you hit publish. High / Medium / Low risk levels shown with colour-coded badges. Catches problems before eBay does. • Free: all listings, all risk levels --- 📦 SHIPPING CALCULATOR Enter item weight and compare Royal Mail (17 services), Evri and DPD rates side by side — sorted cheapest first. Tracked vs untracked, delivery times included. "Use" button fills in the postage field on the listing form instantly. • Free: all carriers --- 💰 PROFIT CALCULATOR Real-time profit, margin, ROI and break-even on every eBay listing. Full UK fee engine including: • Final Value Fee by category (with motors cap) • Managed Payments (2.7% + £0.30) • Store subscription discounts (Basic through Enterprise) • Top Rated Seller 10% FVF discount • Break-even selling price Auto-fills the selling price from the page. Type freely — no cursor jumping. • Free: full calculator --- 🔄 BULK ACTIONS — Seller Hub Checkboxes injected into your Seller Hub active listings table. Select multiple listings and relist or end them all in one click. No more clicking row by row. • Pro only --- 📊 REAL EBAY ANALYTICS — Seller Hub Connect your eBay seller account (secure OAuth) to see actual transaction data from eBay's Finances API: real fees charged, real net payout, and a 30-day revenue chart. No estimates, no approximations. • Pro only --- 🏪 SELLER HUB PROFIT COLUMN A "VS Profit" column injected into your Seller Hub active listings table — net revenue and effective fee rate for every item. • Free: first 10 rows • Pro: all rows --- 👁 COMPETITOR WATCHLIST Monitor up to 50 competitor sellers or listings. Daily background checks detect price changes and new listings. Alerts appear in your dashboard. • Pro: up to 50 items --- FREE vs PRO Free — profit calculator, VeRo checker, shipping calculator, AI listings (5/month), Seller Hub profit column (10 rows), sales snapshot Pro — unlimited AI, real eBay analytics, bulk actions (relist/end), all Seller Hub rows, competitor watchlist (50 items), listing SEO scorer — £9.99/month or £79/year. Cancel anytime. --- PRIVACY VaultSeller does not sell your data. All calculations run locally in your browser. The AI feature sends only your listing title to our secure Cloudflare server — nothing else. Your eBay account connection uses standard OAuth — we never see your eBay password. Full