I'm pretty sure you can sell your tickets for face value without worry.
I respect the prior commitment; however, if you find that you have one or more extra tickets, it is not unusual to sell them on the street to someone who needs them. I have done this on more than one occasion.
Scalping tickets is illegal in New York if you have tickets to a show that you csnt attend you can post them on a reputable site and try to sell them for face value only
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