La. Civ. Code art. 2591
Current with changes from the 2024 Legislative Session
When a sale is subject to rescission for lesion the buyer may elect either to return the immovable to the seller, or to keep the immovable by giving to the seller a supplement equal to the difference between the price paid by the buyer and the fair market value of the immovable determined according to the preceding Article.
La. C.C. § 2591