The beds are super-duper cute! If I were you, I'd make a few up, add up your cost and figure in the time it took you to sew them up. Then, try to find some non-biased friends to give you honest opinions on pricing. Look at places like dog.com; jeffers, petedge, etc. to get an idea of how much like products would sell for. Then offer them for sale. You'd better be prepared to have a massive rush to buy them.
I love the fringe. My kids do chew on the fringe, but the love love love to drag their beds and blankeys around and the fringe makes a handy handle.