Merch by amazon is one of my hustles. I started right before christmas 2017. I had a pretty successful start but it has gotten really bad lately. I have had 5-6 designs in the top100 shirts which were making a killing and a few days later, there are 40 copycats who copy my design pixel by pixel. When I send an infringement report to Amazon, it takes them over a week to even respond and 9/10 times, they refuse my infringement because I don't have an official brand and haven't trademarked my logo. Let's be real, I was just pumping out a bunch of shirts, who can trademark every shitty design you make.
During father's day, I made a great design that was selling 20+ per day, I was super excited. I looked up my keywords on Amazon and noticed that my shirt was on there 17 times and I was ranked 12th. The copycats were selling my shirt at 13.00$ and were selling over a hundred per day... I sent the letter to Amazon, 2 weeks later they refused it as per usual.
Merchinformer makes it that everyone has the same designs up and anyone who comes up with a brilliant design can only profit for 1-2 days until their design is flooded by copycats.
Money can be made but it's frustrating as fuck. I would much rather be better with facebook ads and have my own website.