I owe the Federal government big bucks this year and it's gonna be tight so I need to sell some stuff. My most valuable possession is probably my all-carbon, badass-black 2009 Exocet Warp SL 71 windsurfing board. It has 118 liters volume, handles 5 - 9 meter sails, and sells new for $1700. Mine is in practically new condition with no dings or anything. You can have it for $775 without a fin, or $850 with a 44 cm Tectonics Maui 44 cm slalom fin. You'll have to pick it up or pay the full cost of shipping which could be a lot.
The other stuff I'm selling is listed in the sidebar: a 4.2 Naish wavesail, a 30 cm carbon MFC freewave fin, and a semi-dry wetsuit for scuba diving.