I am trying to work out a trade with another forum member and I want to make sure that both of us get a fair deal. I really don't have any experience on trading knives and I was wondering if there was a scale of depreciation on knives in somewhat of a general sense or if it was on a case to case basis or what. I know that knives that are more collectable can bring a higher price. But I am looking for info on depreciation on knives that are basically production models. Like I said I really want to make sure that both of us come out smiling on this one. If anyone can help I would very much appreciate it.