I was just at my local Wally World (Silicon Valley Area) and they still have fabric on hand. The shelfs were just about empty and was told they are shutting down the $1 a yd shelf. But 2 weeks ago it was refill which had 3 different colors of Ripstop - coated and uncoated. I like the uncoat for tarps( coat it with Silicone formula) and Coated- breathable for Clothing, Quilts and bivy bag ( tops)

Also have found tent flooring material - Poly coating.