Silencer Central digital gift card, where to sell?

[Tacticalpenguin762]

I have a credit in the form of a digital gift card through silencer central. It’s for 589$. I was curious the best place to try to get it sold. I would be asking much less for it. I just don’t need it and it’s been sitting. I can’t post on OfferUp or any other local marketplace because it’s flagged.