gawd that would introduce a lot of variables into buying tickets for a show: number of tickets, section, and price range you're willing to pay.
"is this show worth $60 to me? no. $58.75? nope. $57.50? still no. $56.25? getting there. $55? almost. $53.75? ok, i'm thinking about it. $52.50? well, if the seat is good enough, maybe" etc.