How come big-name cosmetics that sell fast are so cheap?

1, the fast-selling big-name cosmetics are all sold through activities, so the price will definitely be low.

2. Big-name cosmetics sell fast, and it will be much cheaper without store cost and personnel cost.

3, big-name cosmetics that sell fast are cheap, which may be the welfare that the anchor gives to fans, and spend money to subsidize the price.