Startup Idea : Buying and selling store credit/gift cards

Recently I got an email from Bird (scooter service/app) saying that I have a $16 credit. I used one of their scooters while living in Arizona, but now since I’ve moved back to the east coast and there are no Bird scooters here I have no use for the credit— and it will be wasted. Instead, what if there was a marketplace for selling and buying store/service credits? For instance, since I have no use for this credit I could sell it for $10 to someone who utilizes Bird scooters regularly. Im just using Bird scooters as an example. It could be credit or gift cards to any businesses. From there our app would collect a small portion of the transaction.