You would probably do better selling it on CL rather than Ebay, because of shipping costs. Unless you specified "local pickup only".
Edit: There are two on ebay right now, listed under, "Wet Grinder Sharpener". The sellers are only selling the sharpener itself, which cuts shipping costs considerably, and the new owner can get his own motor and base. One is listed at $174.99 the other one is listed at $229.99. So good luck--those are good little machines.