http://cgi.ebay.com/REFURBISHED-CHERRY-Keyboard-G80-8113HRBUS-2-/290392734351?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item439cc17a8fI just received mine today, I made the offer of 30 dollars and it was accepted so you might be able to lowball that number. let others know how low you can go.
The board that I received has white cherry switches (could be clear but I doubt it, it has short springs if that lets anyone know the difference), NKRO, and seems in fine condition. the spiral cord is kinda stretched out and the texture has been worn off most of the double shot alpha and numpad keys. disassembled I noticed that some liquid had been spilled around the left hand control alt area and it was full of dust bunnies and occasional paper clip. all the keys work fine in light of this. I didn't test out the touch pad because I don't have much use for it unless someone knows how I can reassign it to do something else.
The seller shipped it fedex in a massive box sandwiched between two pieces of egg crate foam for just five dollars. so overall I feel like it was a good buy.
EDIT: this board is similar in layout to the mx-8100 review follows
http://geekhack.org/showwiki.php?title=Island:7415What this guy says about the layout is pretty much on spot about how I feel about it. the board also has a grip of macro keys, the only issue I have with them is it doesn't look like you can set a time delay on them. it's possible that I just don't know how to set the delay also.
If you are looking for a good gamer board for cheap this would be hard to beat, I think I personally like the white switches over the black switches so far.