If the real value of the goods does not match the original value, then the contract between the buyer and the seller is invalid, and the additional "non-refundable" is also invalid, and the public can ask for a refund.

If a citizen can produce a report to prove that jade and jewelry are far from propaganda, and are suspected of concealing the truth, fabricating facts, illegally occupying other people's property, and defrauding other people's property, the act may constitute a crime of fraud. You can report to the public security department.