A retail installment contract shall be dated and in writing; the printed portion thereof shall be in at least eight-point type.

It shall be unlawful for any seller to induce or attempt to induce any person to enter into a contract subject to this act by offering a rebate, discount, commission, or other consideration, contingent upon the happening of a future event, on the condition that the buyer either sells, or gives information or assistance for the purpose of leading to a sale by the seller of, the same or related goods.

It shall be unlawful for any seller to solicit buyers, in any advertisement, to enter into a retail installment contract with it if the seller does not intend to sell that retail installment contract to a financing agency or other assignee, unless the advertisement clearly states the periodic rate or range of periodic rates, expressed as an annual percentage rate or a range of annual percentage rates that will be used to determine the finance charge imposed on the retail installment contract.