Best system ever for ticket sales
The old Grateful Dead mail-order tickets. They'd announce on their web site that tickets for an upcoming show would be open for mail order on, say, July 10th. You could order up to 6. Several days after the 10th, they took all of the orders with postmarks of the 10th and started filling them. If there were tickets left over, they went to the ones postmarked on the 11th (rarely happened). If you didn't get tickets, you just got your money back, all in plenty of time for the show. What kept scalpers away (mostly)? PEER PRESSURE! If you had extra tickets at the show, you could sell them for face value or give them away, but if you tried to turn a profit, people would mostly just pass by and call you a greedy a--hole.
Probably wouldn't work for any other sub-group of the general population, though.
Sweet-looking tickets, too.
Sorry, drifting off-topic. Too long since the last show.