If the original is mistaken for a fake and sold at a low price, it can be revoked. According to the provisions of China's Civil Code and relevant judicial interpretations, the actor has the right to request the people's court or arbitration institution to cancel the civil juristic act based on major misunderstanding. Therefore, one party mistakenly sells the original as a fake, which is a misunderstanding of the nature of the subject matter and a great misunderstanding. The parties may request the people's court or an arbitration institution to cancel it. According to Article 147 of the Civil Law of People's Republic of China (PRC), the actor has the right to request the people's court or arbitration institution to cancel the civil legal act based on gross misunderstanding.