A lot of my costumes require furs and leathers for their construction.  Over the years, I happened upon an excellent website at http://www.chichesterinc.com/.  I usually buy my rabbit furs from them (they always had great pricing).  A couple of years ago I bought 35 furs for $0.95 - and I'm still using some of them today!  Though their prices have risen since then, they do fluctuate depending on the season.  In addition, they buy furs not from farms, but from the food industries in Europe and Latin America - better to not let it go to waste.