Do the shirts tend to run small or larger? I would hate to buy a Large(really needing an XL) and end up looking like im wearing my lil brothers shirt from Baby GAP.

I have a few question hopefully you wont mind answering:
Are you based in the United States?
Whats an estimated shipping charge for a 1 shirt and 1 short order to Nevada?
 
I would love to give my support to a Bitcoin based business, so i look forward to your response.