Bent by www.alien-devices.com for me a few years back.
It will work with either batteries of or a power supply.
I have a manual that i bought back in the day before roland started putting their manuals online (bastards!)
Cosmetically its in pretty good shape. Biggest issue is that the plastic piece on the back that tells what output does what is missing so i used a sharpie to label the outputs. The switches are a two position switch that gives you the stock sound if you put all of them in the center.
I'm not really sure how to price this so i'm going with what I spent getting it bent.
Price includes shipping you pay pal fees.