Cal. Civ. Code § 1812.107
Every contract for discount buying services shall be in writing and shall be subject to the provisions of this title. The address of the seller's discount buying facility and the residence address of the buyer shall be clearly indicated on the face of the contract. A copy of the written contract shall be given to the buyer at the time he signs the contract. All blank spaces in the contract shall be filled in before the contract is signed by the buyer. Provisions or terms written by hand on the buyer's copy shall be legible. The contract shall disclose that a bond has been obtained by the discount buying organization and that a copy of such bond is on file with the Secretary of State. The contract shall be specific as to the period of time for which the discount buying services will be available to the buyer. This time period shall not be measured by the life of the buyer.
Ca. Civ. Code § 1812.107