This is an incredible amp that broke a week before an August gig. I took it to a Roland-certified repair tech, who confirmed that the amp needs a new power supply that has to be ordered from Japan with a 3 week lead time. Unfortunately, I had to purchase another amp for the gig, which got rained out -- go figure.
So now I have this terrific amp sitting around (disassembled by the tech)..
I will consider reasonable offers for cash or trade.
Please note that musiciansfriend.com has a similar non-working model listed for $719 not including shipping (http://bass-guitars.musiciansfriend.com/product/Roland-DBass-210-Amplifier?sku=480199#used).