Replying to Feeler: Custom clothing

I just started a company called Amity Customs.
I had designed a shirt for my boyfriend with a painted peace sign with a sort of ripple effect.
I had been complemented many times and have been asked many times to make one.
I was just wondering if anyone would buy them.
I would make all sizes, including tall t's if i can find some.
Price wise i was thinking about $20 for the stock designs and about $30 for a shirt with a requested design.
Just let me know what you think.
Thanks.