Best wax and way to wax front of faded fiberglass TT?

Lots of variables, best to call local RV bodyshop/paint businesses in your area. If I would hazard a guess, again some variables, I would think anywhere between $1,000 & $2,000. One variable that may come in to play is, do you have decals and if so do you want them replaced? If you are still under warranty, have a discussion with your dealer and/or the Mfg. I have heard some manufacturers if not paying the full cost to repaint, pay a portion. Then of course there are those who will not do anything.