My grandmother picked this bike up for me for FREE in Kansas last week and brought it home to me. It's been spray painted silver but I scraped some of it off and the decals say that it's a ZX6000 and the downtube says Trek. It's in really great shape except for the obvious spray bomb. Aluminum frame. I sprayed the decals down with some easy off so that I could take some pictures but I ran out. The paint on the top tube has been peeled off and the aluminum is showing underneath. Any idea how much this thing is worth??