Have you ever gotten a present that you didn't really like or need? Sometimes people get gifts that they can't use or don't want, even if the person giving the gift meant well.
One thing you can do with these gifts is to sell them to someone else who wants them. This is what a gift voucher reseller does.
A gift voucher is like a special piece of paper that you can use to buy things in a store. It's like having money that you can only spend in one place.
Some people get gift vouchers as presents but they don't want to use them. Maybe they don't like the store or they don't need anything from there.
So, gift voucher resellers buy these unwanted gift vouchers from people and then sell them to other people who want to use them. They might sell them for a lower price than the voucher is worth, so that people will want to buy them.
It's kind of like buying and selling toys or other things that you don't need anymore. You can sell them to someone who wants them and make some money in the process.
Gift voucher resellers can make money by buying vouchers for a lower price and then selling them for a higher price. This is how they make their money. It's like buying something on sale and then selling it for more than you paid for it.
So, if you ever get a gift voucher that you don't want or need, you could sell it to a gift voucher reseller and make some money. And if you want to buy a gift voucher for a store that you like, you can buy one from a gift voucher reseller for a lower price than the voucher is actually worth.