I've got a RAT7 (wired) I'd be interested in selling. It is about a year and a half old, includes all original parts except the box and driver CD's. Works fine, but I'm finding it to be a bit small for my hand. Will very occasionally loose an axis of movement if dust/hair gets up into the sensor, easily fixed by a quick wipe every couple of days. I'd be looking for around $35 plus shipping.