I use Jann's Netcraft alot but it is not too far from me. Their shipping prices might make you choke if you have to order off the net. CrazyAngler has good pricing and i have heard good things about TNT tackle and Grandpa Bob's.
For feathers... i would say stick with a tackle company. The quality is by far better! Craft shops have them cheaper, but quality is lacking sometimes and craft feathers can sometimes fade and loose color after getting wet. BUT - don't count out craft stores completley. You can find craft fur for half the price, just make sure it has long hair fibers. The shorter hair stuff works for making dubbing and tying tiny flies though. You may also be able to find full rabbit hides that can be cut by hand to make zonkers.