Just going to have to make some local calls to remodelers to find out.
No way is anyone on any web site going to be able to give you a price on something they have never seen.

As far as I know, the price of the installation of a new bathub amounts to 2000$-4000$. If it is only possible to save Your bathtub then it is better to renovate/remake it than to change it for a new one. There is much less work, mess with renovation and the price is much smaller. I have recently just been looking for someone to remake my bathtub and right here they had the best offer http://aprefinishing.com/ Check, ask.