Sites that will drop ship your T-shirts:

Cafepress

spreadshirt

zazzle

print mojo

Important posts:

Yeah, Spreadshirt is much, much better. I run my store Amorphia Apparel through them, and I've had a lot of fun using it as a part time little side job.For the basic heavyweight Tees I charge $17.99-18.99 depending on if it's a one or two color design, and my cut is between $3.59 and $5.09 on the basic stuff., so that's in the $20 range.My startup cost was $40 ($10 for a month of the premium spreadshirt account, $30 to register a domain and get a years worth of basic hosting, which I later upgraded when my traffic increased.) So that was great, and the products are much, much better if you go the plot-printing route. You should definitely get a premium account, it's just $10 and gives you the ability to upload unlimited vector designs, which is what makes the better quality products. It also has a number of other side benefits (no banners, XML product exports and other goodies).They also just started an in house silkscreen division, but those aren't made to order for obvious reason and thus will incur larger startup costs (but offer a fatter profit margin). I highly recommend making a myspace page! It really is a great way to share your work, but be sure to list a little something about yourself on your page, share your interests and you will find people far more receptive to you.Oh and it seems basic, but I've found just making sure your designs are different is really important. There are tons of fads in ironic hipster tee shirts (and I sometimes find myself accidentally dipping a toe into them) but it's much harder to compete if you are just planning on following the trends. In particular there seems a glut of "states/cities with a funny slogan", Graffiti sheik, illustrated puns, movie quotes or parody logo designs. So doing anything in those routes will have the advantage of carrying with it a built in audience, but it will be an uphill battle to get noticed.

dan

PrintMojo does real screenprinting and embroidery, and they handle inventory and shipping for you, similar to what CafePress and Spreadshirt do, except it's not print-on-demand -- you do need to pay for the inventory up front. They're not as cheap as the others, either, so you'd need to either price your shirts relatively high or accept a very low margin. Still, if it's quality you want, screenprinting is the way to go.

steve