I heard that most auction companies in Shanghai are liar companies. Is it true?/You don't say.

At present, domestic antique auction companies are mostly liar companies. They tell you how valuable your collection is first, and then let you pay tens of thousands of dollars for the so-called pre-advertising promotion fee. If the auction fails, they will ask you to pay tens of thousands of promotion fees for various reasons, or so-called personal connections, less than half the price. Anyway, it's all the collector's money, and it will be much more collected in case of a deal. Remind national collectors to keep their eyes open, keep a clear head and pay attention to being cheated! ! !