joetoga.com is popular. You might also try ebay. You can always find good stuff on there
Look at this older link. Some members posted things they wanted and others found links.
http://forums.greekchat.com/gcforums...ht=merchandise
Good luck. Also, I have found if you look at embroidery stores (local) ones and price them out in the phone book, you CAN get good local deals. Sometimes the ones right by campus can be more $$$ because they are right THERE, and they know they're easily accessible. If you find someplace a little further out and the Greeks start taking their business there, the prices will drop at the local spot once they realize there is competition.