I always wanted a knife as a kid and got it for my 15th birthday but I don't play as much anymore. It's been rotting in my inventory for nearly 8 years, I got it for about 2800 php and could sell it for 4700 (getting 4100) meaning about a 51% net Profit rate for an 8 year investment. It barely gets any higher in sales.
I wish I could say I have alot of memories with it but I really just played the game with my friends back then and it was more of a peer pressure thing. My thought is that if I buy recoils in bulk I could earn more (the stock's gross rate literally equalled the rates in a week) and get myself the games I want. I missed out on buying glove cases back then and while I still have 4 alongside other older cases I'm keeping them as they grow exponentially.