These are all Persian Ardebil flat-woven Kilims called "Varni" with a cotton warp and a medium quality silk weft. It is the silk weft threads that form the field of these rugs. They are good looking, decorative pieces but do not have a high market value. I would say that $8-$10 per square foot is a fair price for them. There is something you can do to flatten the sides. Let me know if you need to do this and I will give you instructions.