How expensive to replace the slide out awning fabric?

www.shadepro.net/category/Replacement_Slideout_Canopies.html

Try these guys. I replaced one of my longest ones on our Phaeton with the acrylic fabric. Nice material, cost less than $250 and wasn't hard to do, especially if the old one is still in place. Go on their web site. You can call them as well to get sample material.