I'm renting one of these lenses now and have fallen in love with it. Cosmetics don't bother me so if it is roughed up on the outside but looks good inside I'll be interested. The only other requirements than perfect glass are that it comes with front and rear caps (front being the most important).
I'd also be willing to trade my 105mm VR (in excellent condition, no paint chips or damage to the glass at all, I have box, receipt, etc, everything but the little pouch that it came with) with some cash coming my way or if you want to be generous you get the 105mm VR and I get the fisheye and a 60mm macro (the AF-S model) and you get a little cash as well.