Amazon definitely keeps metrics. There was a point where I had a string of returns that bumped my overall return rate up above 30%. I got an email saying they

Amazon definitely keeps metrics. There was a point where I had a string of returns that bumped my overall return rate up above 30%. I got an email saying they noticed excessive returns and would cancel my account and amazon prime If it continued. I started doing more diligence in screening vendors I was buying from as a result (and stopped ordering as much from amazon).