I know some older or special kits sell for a lot of money. But for old hop up items? It seems that even the rarest ones don’t seem to exceed about $100, and from what I’ve seen NIB vs used for these rare parts doesn’t seem to make a difference. I’ve been tempted before by some old rare hop ups that were selling for about $50, and that seemed a bit high compared to the price of a rare complete kit. But then a couple of days ago I saw Tamiya part 53866 new in the package. A few years ago I thought it was super cool and wanted one, but hadn’t come across it until now. The guy wants $100 for it. What do you do to determine the value of rare items like these that may not come up for sale often? Do you think that you will pay whatever price it takes to get it, or do you have certain limits?