Is there a way to restrict the number of tickets purchased for one perofrmance in an order?
We restrict tickets to a performance, based on a whole bunch of stuff...Rank triggers our MOS shift for Members, which allows them to add Member Pricetype tickets to their Cart, BUT we check previous orders and tck_hist for that performance and pricetype, and verify how many they are allowed (based on the issues field of their membership).
The problem mentioned, regarding scalpers and various accounts, is almost a different issue. you can limit all you want, but separate accounts is tough. Then you're better off doing some sort of unique account verification...
I'd be happy to share more of our ticket limiting, if it interests anyone, but note, our programming is fairly targeted to membership discounts, however, i'm sure you could tweak it for all constituents or whatever...
I'll also be presenting on the subject at TLCC2011, TNEW Magic!