I know what Marty means about keeping all sizes/styles in stock. That is a big headache!
Already, this short conversation shows a wide variety of preferences. I wouldn't wear a man's t-shirt, need the logo on front 'cuz of long hair, sweatshirts would depend on zipper, pullover, hoods, and so on...
I bought an AnyMarine.com patch and sewed it onto a good quality olive green sweatshirt. Looks professionally done. People often ask about it, especially when I have a full shopping cart of bulk items!! That's when the AS business cards and pens come in handy - yeah!
Just started to hit the yard sales for books, DVDs, CDs, Beanie Babies and children's clothes for the HA projects, etc. Here, in Southern California at least, there are SO, SO many homes with tons of brand new or barely used stuff. The logo usually generates interest and they end up giving lots of things free or with deep disounts!!
Marty ~ I hope I didn't break any rules or legal constraints by sewing it on myself?? Please let me know if I did! 
Warmly, Kaylynn