My Deal Verifier
Verify before you bid.
Color-coded verdicts on every eBay, Mercari US, and Buyee (Mercari Japan, JDirectItems Auction, JDirectItems Fleamarket) tile. Buyer mode tells you if you’re getting it cheap. Reseller mode tells you if you’ll profit after fees.
Built for the way you actually shop.
Five-level buyer verdict
Every eBay tile gets one of: Great Deal, Good Deal, Fair, High, or Overpriced. Calculated against the live market median for that exact item.
Reseller mode profit math
Toggle to reseller mode and the same listings get scored by margin after eBay fees, shipping cost, and your ROI threshold. Three verdicts: Good Buy, Borderline, Pass.
Buyee Mercari Japan scanner
Scoops up Mercari Japan tiles on Buyee and runs full landed-cost math: item price, Buyee service fee, JP domestic shipping, international forwarding, and the new 15% Japan tariff.
Auction snipe window
24-hour time-scaled buy-cost buffer. The closer to auction end, the tighter the buffer, so last-minute bids reflect what you can actually pay.
Show-comps transparency
Click any verdict to see the exact comparable listings that drove the median. No black boxes — every score is auditable.
Match-quality filter
Tighten or loosen the comp pool by quality before computing the median. Filter out obvious junk listings without rewriting the search.
Free in the toolkit. Forever.
Install the toolkit and use My Deal Verifier immediately. No signup, no card. The Free tier generates value the day you install.