Maybe it's me, but I think you may want to come down on the price a bit. Not too long ago there were music stores selling them for $600 and less (brand new) just to get them off the shelves. Just a suggestion.
GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.