For ~$40(USD) I want a much higher quality shirt than Gildan. That seems ridiculously over priced. With a quick Google search "Gildan's 100% cotton, ringspun, pre-shrunk sofstyle tshirts" (what the about page says you use), the shirts cost less than $3.00(USD) to buy in bulk.

Suggestion: Why not lower your profit margin a little bit (you have to be making at least $30+ USD on each order right now) to make it more affordable? I just imagine this could probably go much more viral at a more affordable price.