Gift cards are a common money launderer. They are bought by large corporations and medium-sized enterprises that have gray income. In the end, they get clean money and we get cheap gift cards. Gift card sellers are just a middleman in this matter, that's all.
Everyone here says that you can’t earn much from gift cards, it’s difficult and not profitable. I don't agree with this.
You don't have to buy a product and then sell it... I make everything simpler. I am looking for buyers on social networks, Facebook and Instagram. It's very easy when the price is 20-30% less than in any store; I have a queue of buyers for almost all of my products. And only then do I order goods for them, paying with a gift card.
At least it's much safer than buying stolen accounts or credit cards.
This is a great income... I can earn about $10,000 a month.