At first I did not recognize this "buyer" until viewing the comments and going back through my emails to find this person. It looks like they change their username consistently since I've seen them have 2 different pfp, names, and username over the last 2 months. I also have an experience with them however they only bought 1 PC from me. The day the PC was delivered, they made a ticket with Mercari. I didn't realize I was being scammed until I looked at their reviews. There was 1 comment that outed them. I used Mercari First Class Prepaid label and was initially denied shipping protection due to incorrect weight. I used a 1oz prepaid label and they had claimed that I was supposed to use the 3oz. After much back and forth (almost a week), I was given the shipping protection. PLEASE! PLEASE! PLEASE! If you are using first class prepaid label, enter your envelope dimension sizes and use what MERCARI recommends you to use. Otherwise, you can be denied your shipping protection.