Unfortunately you should expect a dealer to offer much less for the trade in. When we purchased our 2K S last year we were offered $4500 for our '98. We drove both cars home and waited until spring to sell the '98. We got $8500 but it took 4 months and we turned down a lot of low ballers. Of course it was great fun to have 2 matching red Boxsters for 7 months. We called them the twins.