Support and corrections

Spot an error? Tell us.

This market changes fast. If a grade, a fact or a link is out of date, report it here. A person reviews every report, and every correction is logged on the seller's page.

Report a problem

What's wrong?
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What happens next

  1. A person reads it, usually within 2 business days.
  2. If we confirm the problem, we fix the listing and rescore it. The change and the reason are logged on the seller's page.
  3. If you left an email, we tell you what we changed, or why we didn't.

Grades are our opinion of public evidence as of the date shown on each page. We correct errors when they are reported and confirmed.

Want to add your site?

Sellers can ask to be listed, and buyers can tell us about a seller we're missing. Listing is free and grades can't be bought. Every seller gets the same 14 checks.

  • US domestic sellers only
  • We need to see lab reports and policies to grade
  • A person reviews every request
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