Price...?
It's really not going to be much. Depending on the condition. If it's in pristine condition, you'd be lucky to hit $1200 to $1500. With the market down low, it would be a hard sale. I just went and looked at a 97 GTX and it's resale under Kelly's blue book wasn't but $2600. That was of course, in showroom condition with a trailer. It also has the bigger 787cc engine verses the 717.
But the idea of the XP limited will do what you want out of a ski, as far as pulling tubes etc....
I don't like the idea of the pulling engines from this one and putting it in that one.....that's fine for someone wanting to mod out for racing, who has the big bucks to do that with....but like you pretty much said, why switch the stuff when you can just buy one.
In my wallet, zinnngggggg, usually equals chachingggggggg.