Kitten_Val, they aren't a common item most Walmarts carry. There are two Walmarts in my town and only one (of course the one further away!) sells them.
I'm going to see how much the navajo rugs are at Walmart. If they're really cheap, I'll get one. I have found some really nice saddle pads on eBay
, as well. We'll see which is cheaper. I might try riding with the navajo rug (my friend has one I can borrow for a little while, at least) and see what I think first.