Get him down to $3,000 if you can but buy it.
Our X2 hurts my neck, but I love the bottom hull so much that I want to take a mold off of it. Mint is mint. They aren't making any more new 32 year old X2's.
Personally, I like to start from mint and stock. Because things will break on a 32 year old ski. And it is easier to fix a ski which is stock.
Each one of those hull pieces is nearly impossible to find oem nos or used mint condition.
Pay fair market price for it. Fair market price is what a willing buyer will pay which a willing seller will accept neither of which are under a compulsion to buy or to sell.
What price we all paid for skis previously has nothing to do with the current market prices. Do your searches for comparison and don't be afraid to spend more than what others would spend. It is your happiness at issue. Not theirs. We all have limited time with work and whatnot. And we are all only here on this planet for a little while. So, you do what makes sense for you, your family and your other obligations.
Personally, nothing makes me work harder than after a great day of jet skiing with my wife.