http://www.yelp.com/biz/sauders-fabrics-denver
if you're anywhere near the vicinity of denver, pa., this is the place.
several times each year, they bring in thousands of bolts for their bolt sale and offload them from trucks onto their loading dock, which is then FULL of cartons of bolts. the prices are unbelievable. call the phone number for the next sale.
p.s. be prepared to buy more than you expect to. i was there 2 years ago, and i'm still working from a bolt of black and haven't even started on two prints.