What if the kid passes at $30 because money is tight, they’d prefer to pay $20 and want to try for that, but scalpers snatch up all the cheapest tickets before the kid is able to. The kid still really wants to go, however, and is willing to actually pay the scalper up to $40 when push comes to shove, even if it hurts a bit?

Or if they weren’t organized enough or able to commit to going early on, but still have the purchasing power to pay a higher price?