Hey folks, I figured I'd offer it here before eBay. I've got a Lexicon MPX G2 that I don't use anymore since I went back to stomp boxes. It's an awesome and very flexible unit. I used it for a while as a direct to mixer preamp and speaker simulator - it worked pretty well for that. It's got a slightly bent rack ear but still fits fine in a rack. $500 and I'll throw in the footswitch, the expression pedal works fine but doesn't stay in one spot very well. New they were $1200 and I think the footswitch was $400.
In a couple of weeks I'll put it on eBay.
Here's a video clip of it in action . . .