6-7 years ago, I purchased a Korg 01w/fd for around 1600. A few months later, I sold it to a friend for 1300. Now, 6-7 years later, I bumped into him and he said it is just collecting dust. I want to purchase it back. What do you think a fair price would be. At this point, I can't remember which size it is. Seems to me it was not the biggest number of keys, nor the smallest. It does not have the pedals or speakers.