People buying keys

I myself have been contemplating when to buy a key when I thought, nobody has to buy a key for more than the lowest price. people just wait till the price is, lets say 5, and then buy, all 100 keys are bought at the same price, at the same. No idiots buying the keys for 60-100+ . Just some simple logic for me.

I’m pretty sure the keys usually are sold out before the price goes down to 30$ or less.