What is it worth to me ? Thats what I sometimes ask myself. Case in point, I have some leather riding pants but saw a better pair second hand. Really, did I need them, or did I want them. Gave a price I was willing to pay and as I am small and a bit round, the amount of people these pants would fit was a small market. Seller got the shits on, so I walked off. Had he counter offered I may well have purchased. Same with bike parts, do I want it or do I need it.