I happen to have a pair of Shimano XTR V-brakes. A guy posted on CL that he was looking for some V-brakes. I told him a few things that I was looking for, which included a rear disk brake wheel. He's got a Deore hub laced to a Mavic rim. I have no idea what these brakes or his wheel might be worth. Would that be a good trade or should I look for some cash on top of the wheel?