Regular 2203's are going for 1500-1600. I scored my Fawn for 1800 which was fair considering it still had the original GE6550's and the amplifier is in mint condition. The dude originally wanted 2100 but I talked him down.
I passed on an early model 2204 JCM800 for 1300 out the door of a local guitar center that was beat all to hell. The better the condition of these amplifiers, the more of a premium they are bringing it seems.