Price?....
I think the XP is the better choice of the two. I believe as for riding it, you'd be much happier with the XP. The SPX and the reason they are hard to come by? That's because at that age, no one has them anymore. They weren't that great a model or hull. The demand for the SPX is very low, so I doubt you'd find many of them still around. That's probably why he said they are hard to come by.
Starting price for the XP? This is hard because I've made this point so many times. The price is always affected by your geographical location. Where you would pay $100 dollars for something in Connecticut or New York, I would pay $25 dollars for that same item in Alabama.
You can google Kelly's blue book to get an idea. When you do this, they ask you for your zip code. This is how they know to adjust pricing for your location. Here, with my zip code, it said a dealer could start with an asking price of $3000 bucks. Now, keep in mind, when you look at their price, this is a dealers retail price. Your buying from an individual, that's less. Anything you find wrong, is a deduction (seams of the seat coming apart, sun oxidation, parts missing or broken, ...things like that.
I would almost agree with Kelly's. I bought my 97 GTX this past spring and paid $2200. It was in mint condition, like it was sitting on the show room floor. Not a blemish on it. So, if this is the more popular XP, with the larger 951 engine, I'd say a good starting price, that is a fair start, should be about $2700 or $2800. That way, you'll leave yourself some haggle room. I don't think I'd pay any more than $3000 or slightly above, depending on the condition.
Don't get too excited in the buy. Remain focused on what your about to do. This is a nice ski. Your excited. You think it looks sharp. The guy selling it is going to talk it up. ......DON'T!... get lost in that excitment. No matter how good he says it runs, you do not buy it without the minimum of a compression test. If you do not do anything else at all, you test the cylinders and pistons conditions. That's like using a stethoscope. You need to know that you got a good, workable motor from the get-go. You might have to change pump oil or change plugs but make sure you have good and even compression. Make sure you read the spark plugs, to make sure they both have an even burn, not running too lean. If he's put new plugs in it, ask him if he has the old ones. Check that all gages work and read properly. Check the VTS, make sure it works..... things like that.
Body language. When you start enquiring about the condition of the ski, watch his body language. If he knows something is wrong with it and see's your somewhat a mechanic, who knows what to look for, he's liable to show some nervousness. If he turns your request down to do the compression test, he's hiding something, don't buy it.
Before you jump off the deep end, if you have any questions about anything I've said, please post or PM me. I (along with many others) know what it's like to get excited about a new purchase. You've got friends here that want to help balance that excitment with logic so you aren't spending a thosand dollars right after you buy it in repairs.
Take your time, enjoy the purchase. Need help, give us all a holler. I dont' think anyone here is short on opinions.........:cheers: