You bought this thing voluntarily when you bought it. You can't say that I bought yours and found that others are cheaper than yours, so you have to return it to me or make up the difference. They can't get it back without making this promise. Unless their products are fake and have quality problems, this is counterfeiting, but it is estimated that it is a bit troublesome to report to the official. It is well known that everything in beauty salons is several times more expensive than the real price. Since you have a card, they have sent you cosmetics, so go to their home for care. If you really buy products in their home, it must be expensive. It's a good deal to send you a card. Now beauty salons are very expensive for nursing and beauty. As long as you figure it out, the price of each care is ok! In addition, I suggest spending all the money in the card as soon as possible, because small beauty salons are easy to open for a while and then they will really lose money!