Well now that I've gotten my feet wet in the never ending money-pit that is synth bass, i'm hooked and looking to upgrade to a more versatile synth pedal.
I picked up this OC-2 a few months ago on here, and installed the synth mod detailed here:
HOW TO: Boss OC-2 Synth Mod - YouTube
It makes all of the glitchy broken nintendo noises you could ever hope for and, with a flick of the switch, you can snap it straight back to its original sound. A few chips and scuffs in the paint, it's seen some use, but functionally perfect. Also, there is industrial velcro on the back, which can be removed should you so desire.
In terms of trades, a synth or compressor would be nice (I add or you add as appropriate) or really anything else interesting.
Cash is always nice too, $70.00 shipped in the continental 48.
Overseas is not a problem, PM me and we'll discuss. SOLD