Lot's of good replies, the same thing we are seeing in Arizona. I was up to 7 stand ups until recently and decided I wanted (4) high quality ski's so I picked up an 08 SuperJet for $4500.00 and an 06 SXR for $4200.00 in the last month (both great deals), both mint ski's that are keepers, decided to keep my 2000 SuperJet and a 2001 SXI Pro.
Ski's that I sold were a 1990 650 SX for $ 1300.00, a 1994 550 SX for $ 1100.00, a 1994 750 SX for $ 1400.00, and a 1995 SuperJet for $ 2000.00, all of these extra ski's were mint and I think I sold them all at fair prices considering the condition and low hours. I sold all of these ski's in less than a week.
Since selling them the market is very low with supply and the ski's that are listed are ridiculously high priced, but if people have the cash and want a stand up ski the prices will be paid.