Would not recommend this app. The only pro that lead me to using this app is that its beta launch does not charge commission. But Mercari is a business it has to make profit somehow to sustain itself. So how? Mercari lacks human customer service that would never hears your side of the story. I have been scammed many times by intentional scammers or just new buyers that never rate and USPS screws you over by not updating tracking. Their customer service doesnt help you track down anything, youre pretty much on your own. The scoring system is poorly done since it has no weight on their decision to cancel transactions even after you sent out the items. So even if you have 100% excellent transaction ratings it wont matter much if the USPS doesnt update tracking to be "delivered"and your buyer will not rate or respond to your comments. Mercari will always side with the buyer, regardless if it is clearly the buyer scamming you or you have good ratings in the past. There is no way to search for buyers by name either to block. They have no real system besides tracking number to ensure seller gets paid. So youre relying on USPS to not mess up! (Yea right!) Either way, it gives the seller headaches and loss of your items with nothing in return. People who rate this app as good has mostly used the app for a short amount of time. Ive been with Mercari for over a year, I think Ive had enough of being scammed by other users and Mercari. How else do they make money and not charge an app fee?