I have a Roland BK-5 Arranger keyboard that I bought about a year ago thinking it would be used to edit styles for the Roland AT-350C combo organ that I play most of the time. It turns out that it is just sitting in my studio unused for the most part. I think I have played it about a total of three or four hours. It is in mint condition and has the latest version 1.05 operating system installed. Would like to find a new home for it where it would be used. Thought I would put it on the forum for $500 before using eBay at a higher price. I have the original shipping container. If you are interested, my email address is at my forum profile.