Taobao auctions are about losing money but gaining publicity. Generally, the starting price is one yuan, which means the reserve price is one yuan, and there is no upper limit. After the auction begins, the buyer makes the bid himself. He can bid as much as he wants. If the buyer bids, you can see it on the product. At the end of the auction, whoever bids the highest price will get the item. If your item is 50 yuan and the highest bid is 20 yuan, you have to sell it. If the highest bid is 70 yuan, you will make a profit.