Is it ok to sell extra show ticket?

Hi. I won 4 tix to see a traveling broadway show. I don't need all the tickets. Would it be wrong (either illegal or just tacky) to sell the extra tickets online or whatever? Like for tiny fraction the price of the ticket? They are technically already paid for and seats spoken for so it's not like the show loses money. I was just wanting to be sure. It would be nice to have some extra gas money to get there.