Legal analysis: book pricing is not government pricing. Personally, I think it's not illegal. If the other party sells it at a price higher than the listed price, you can choose not to buy it.

Legal basis: People's Republic of China (PRC) Price Law.

Eleventh operators enjoy the following rights in price activities:

Independently set prices regulated by the market;

(two) to set the price within the scope stipulated by the government guidance price;

(three) to set the trial sale price of new products within the scope of government-guided prices and government-priced products, except for specific products;

(four) to report and accuse violations of their independent pricing rights according to law.

Twelfth operators in price activities, should abide by laws and regulations, the implementation of government guidance, government pricing, legal price intervention measures and emergency measures formulated according to law.

Article 13 When selling, buying goods and providing services, business operators shall clearly mark the prices in accordance with the provisions of the competent pricing department of the government, indicating the commodity name, place of origin, specifications, grade, pricing unit, price or service items, charging standards and other relevant information.

Operators shall not sell goods at a price higher than the marked price, and shall not charge any unspecified fees.