Don't use bitcart. I sent them $100 worth of dash two weeks ago, they sent me two $50 gift cards. One worked, the other said it hard already been redeemed by a different Amazon account.
I emailed support. They took days to respond and asked for a screenshot as proof. I sent them one and they haven't responded.
So as of right now, they have stolen $50 from me.
This is a throwaway account to protect my privacy.
I would recommend staying away from bitcart, for now at least. I think their business model is broken because they can't stop the gift card sellers from using the card after trading it.