$23/mo is way too steep for something like this. If I'm looking for neat t-shirts to wear, I can get shirts from shirt.woot for $10/each, with free shipping.
Call it apples and oranges if you want, but to me, getting a random shirt from a company I've potentially never heard of isn't so enticing at $23/mo.
That's more than I pay for my VPS, more than I [used to] pay for netflix, more than I pay for a couple of t-shirts I get to choose from woot.
Etc. etc. etc.