9. No person may, in a contract or in several contracts between the same buyer and a seller or several sellers who cooperate on a regular basis, allocate the price of the goods and services so as to minimize unduly and in a way that may cause prejudice to the buyer the sum that must be deposited in trust under this Act.
No indexation clause nor any other clause allowing the seller to increase the price of property, goods or services to be provided under a contract may be included in a contract.
1987, c. 65, s. 9; 1999, c. 40, s. 23.