Results from 12 year old kids panicing about losing their bank wealth in the game through a rare, so they dump for lowest price, someone buys it, and the price goes down in the g.e.
Items will always rise again due to them not being put in the game again, so don't worry. You can either buy now, or wait a month and try your luck at an item that may be 50m or even 30m in 2 months time.
Sports Bettor - DM me if you have credit accounts.