How much is membership? Membership is 100% free and simply requires a few verification checks. This is to ensure people bidding on the site are real individuals. Have more questions? Submit a request Comments Monica Olson 13 April 2015 11:17 are the checks done on both the seller and buyer? Kelly Slater 13 April 2015 23:59 We check each person's membership by verifying their phone number and email address to make sure they are legitimate.