Wow. I had the same experience today. Had to drive about 30 miles, but I found it on Craig's list. They had over 100 boxes ( the kind they ship reams of paper in) of fabrics, and you could fill a bag (the plastic kind you get in the grocery store) for $5. :-) The problem was that there was no rhyme or reason to how the fabric was sorted. I also think I arrived too late to get the best "stuff". :-( Fabric pieces were just thrown into boxes, all sizes and types. I couldn't find any big pieces of cotton fabric, but grabbed what I could find, and stuffed it into my bag. When I got around to washing it, it filled my oversized washer! Now I have plenty of choices for a scrappy quilt.
Wish I had brought my camera along. You wouldn't believe the rows and rows of tables. Thought I was at a mini-Shipshewanna! What fun!;-)