blame mass idling
No, blame people constantly selling keys for a scrap more than its worth, eventually making it raise higher, repeating the cycle.
Key inflation is the one thing that bp.tf forgeted up. People see the price then they try to make a profit, which eventually becomes the new price on bp.tf.
Sure, there is a lot of ref, but if metal was the one inflating, then hats would also go up in price, not just keys/tickets.