Fly Tying Supplies

Got the Peak vise coming as a gift for my brother-in-law - thanks to your
recommendations. Now, I've been looking at some of the supplies over at
Gander Mtn. and about fell over when I saw some of the prices for feathers
($40) and fur. That's enough to make ya pick up road kill and recycle
it......

So where do you guy's find the supplies needed at reasonable cost? I doubt
he'll need some exotic bird feathers (real soon anyway) but are there any
really suppliers you favor?

Thanks,

Bob S.