Tex. Fin. Code § 345.353

The designation requirement of Section 345.051(b) and the notice requirement of Section 345.052(d) do not apply to a sale under a retail installment contract or retail charge agreement negotiated and entered into by mail or telephone without solicitation in person by a salesperson or other representative of the retail seller if the contract or agreement is based on a printed solicitation, including a catalog of the seller, that clearly sets forth the cash price of sales to be made through the printed solicitation.