Make tickets online $500. When you arrive you're given a special ticket-locked voucher that lets you go back to the website and get $480 back (assuming tickets are still $20 like when I was 20 years old).
The idea here is that the scalped ticket would not get the refund.
Scalper pays with their card
Someone purchases the ticket from the scalper
Venue distributes special code (short like 2 letters) that gets tied to your ticket.
If you go back to the website, and enter the code, it's not benefiting your credit card, but the scalpers. So if you purchase from an unauthorized person, you have no reason to enter the code.
Wrong code entered twice - lose your 480.
Numbers could be adjusted to make more sense for more people, as long as it makes the scalper ticket seem ridiculous.
