Is selling an item for double its original price, which the buyer did not hear clearly, considered a voidable sale?

The seller must adhere to the ethics of Islam in selling, such as trustworthiness, good advice, and truthfulness, based on the saying of the Prophet, peace be upon him: "The truthful, trustworthy Muslim merchant will be with the prophets, the truthful ones, the martyrs, and the righteous." The sale is valid as long as the woman purchased willingly. As for the option of ghubn (excessive deception/profit), the correct view is that profit has no limit unless the buyer was ignorant of the value and trusted the seller, seeking his advice. In this case, the sale is to be revoked if the profit is excessive. The questioner is advised to inform the girl of the truth and not to repeat such an act.