http://www.prepal.com/data/Yamaha.htm
I wouldn't pay more than the going rate on that site unless, you LOVE the sound of it, its in great condition with no issues, or the seller is willing to throw in a case, stand, some nice headphones, etc
i really like all the yamaha products I've bought, but when looking at a new piece of gear have to take stock of what bases I already have covered sound-wise, and decide if I need what the new synth will do
you might want to offer half of that and include something you don't need that interests the seller for partial trade
yeah boyeee