Legal analysis: The punishment standard for selling 50 pirated books is determined according to the amount involved. Individuals with illegal income of more than 100,000 yuan and units with illegal income of more than 500,000 yuan shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and shall also or only be fined; If it is not serious enough for criminal punishment and damages the public interest, the copyright administrative department may order it to stop the infringement, confiscate the illegal income, confiscate and destroy the infringing copy, and may also impose a fine; If the circumstances are serious, the copyright administrative department may also confiscate the materials, tools and equipment mainly used for making infringing copies.
Legal basis: People's Republic of China (PRC) Criminal Law.
Article 217 Infringed copies with huge illegal gains shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention and shall also, or shall only, be fined.
Article 218 Anyone who knowingly sells infringing copies as stipulated in Article 217 of the Criminal Law for the purpose of making profits and is suspected of any of the following circumstances shall file a case for prosecution: (1) The amount of illegal income is more than 100,000 yuan; (two) although the amount of illegal income does not reach the above standard, but the value of unsold infringing copies reaches more than 300 thousand yuan.