Laklander beat me to it, Matt. I'd say you should be able to get no less than $1500. As long as all the features on the workstation are still in proper order.
One thing you should consider, though, is that people who are looking for these can't get them new anymore, since the product was discontinued somewhat recently. I'd look for something on the higher side toward $2000 if you can because of that fact alone. It's always helpful to know what options your buyer has and doesn't have as well.
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Music Gear Review - Keyboard/MIDI and Songwriting Editor/Mod
"I don't like it, and I'm sorry I ever had anything to do with it." - Erwin Schrodinger, on Quantum Physics
Keys: Nord Stage 88, Nord Lead 2, Yamaha W7
Upton Bass Custom Upright, BSX Allegro EUB, '80s Peavey T-40, MIM Active Jazz Bass, Godin BG-5, Fender Bassman 100, `68 Fender Bassman 50 head, Gallien-Krueger Fusion 550, SWR (pre-Fender) Goliath III 4x10, Markbass 2x10 Traveler