I have found some amazing fabric at the second hand stores... I try not to look any more!! I behaved myself the last time I went in to Hancocks and only purchased 1 yard of pumpkin fabric for fall art quilts.... then put the blinders back on!
One of our local thrift stores has the fabric all nicely measured and folded - it's sweet. Lately though I have only seen polyester ickiness but then I don't go there often anymore.