Did you insure it? Because most times the sales are final. You can visit certain sites that if the show is sold out there are people looking for tickets that you could possibly sell a ticket. Standing out in front of the building to sell tickets can be risky because if it's considered scalping you could be arrested for doing it. That I would look into sites that are for re-buying of tickets or places where people sell tickets to things are no longer able to go to you would just have to Google for your area
Before the show, sell the ticket
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