I'm not sure where you are located (not sure where citrus county is) but on our last TT, after 5 years heavy use, my wife sewed up covers herself. They were good enough, not factory or expert finish, but good enough.
Not saying you have to do them yourself. We did ourself only because the cost seemed really high...bringing in dinette cushions/backs in (u shaped so more cushions than normal). But what I'm getting to is search/google apolstry shops in your area and give 'em a call.
Sorry I can't give you exactly the answer you hoped.