To be blunt, I don't see the appeal for any of those slogans. Being over 50, I might not be your demo, but that's MHO."Sex is Good"
"Sodom & Gomorrah"
Are those the quotes on the shirts or are there more quotes under those brands?
Have you researched and soul-searched your target market to have the best chance of selling out?
I'm small-time (1500 to 3000 per year) and all I own is a computer for design...no presses or anything else. (Looking around at possibilities)
My past campaigns have been police/fire/ems, dog food manufacturers, brewery distribs, realtors, insurance agencies...all across the road categories. I get ideas from the local papers, blogs, forums, etc.
After I lock-in a concept and contract a short run, I identify folks at the top of the pyramid that will purchase in volume, or have influence in the markets I target.
Then it's just a few phone calls, quick ad casual meetings, or other networking to gage the market and get selling. I don't want to sell 3,000 at a time, just 30 100X.
I've sold "some" on Ebay but haven't pushed it. Haven't tried real online either.