Quote Originally Posted by JohnnyA View Post
Buying games cheaper now in order to play them later, at a time when they may be expensive: makes sense. Buyer games now in order for them to appreciate in value: doesn't make sense. They are the worst investment you could make. 99.99% of them depreciate.
This. Also it may sound obvious, but make sure you actually want the games you're buying and are not just getting them because of rarity. I bought Electroplankton a while back for quite a bit, but sold it recently when I realized I'd played it exactly once.