i can think of a couple of places:
www.thegreekshop.com is owned by a Soror and her Sigma hubby and they're in Northern NJ. i bought an item from them and they have quality stuff, never heard any complaints about them. secondly,
www.semestersgreekshop.com. they're here in Cincy and i get stuff from them all the time. if you don't mind shopping out-of-town, check them both out