I command four tee shirts from this website.
The quality is really good, the design is printed in the fabric and not on it, so it does not come off in the wash (if you turn it right).
Customer service is also very responsive, I had a delivery problem and they responded within the day

I frequently get compliments about this shirt from fellow nerds. Its a great fit too. A+

Definitely the most metal nerdy shirt I own. Took some friends a few minutes to realize it was a Mario related shirt, and then proceeded to say how cool it is. I'll be wearing this all the time now!

Great Product with a great Print. I love this so much :)

If this doesn't end up being an official Nintendo shirt for the new game, then I don't know what will be.