hello

i am interested to buy tix for the prince show. but its sold out and tix range from 350-800 chf. so does somebody here know how it goes with tickets being sold at the festival doors/ticket booths?  i phoned the festival office and they said each night they sell leftovers, tickets not picked up or paid for at 4pm. but i dunno if its overrun by people, diehard fans camping out weeks before? also i have heard that there is always people that sell their tickets, but that overpriced like on viagogo? so what do you say what to do, if its enough to be at the ticket booth by lets say 2pm? or what else to do to get 2 tix for any of prince's dates?

cheers!