When you have a $75 Amazon gift card that you no longer need or want, there are several options available for selling it. One option is to look for online marketplaces that deal with gift card transactions. These platforms often have a wide range of buyers interested in purchasing gift cards at various denominations.

Another possibility is to approach local pawnshops or second - hand stores. Some of them may be willing to buy Amazon gift cards, although they might offer a slightly lower price compared to online platforms. It's important to do some research about the reputation of the pawnshop or store before attempting to sell there.
You could also consider reaching out to your friends, family, or colleagues who might be interested in buying the gift card. This can be a more personal way of selling, and you may be able to negotiate a price that suits both parties. However, make sure to have a clear agreement in place to avoid any misunderstandings.