(a) In accordance with 15 U.S.C. 1703(d)(3), the refund to the purchaser is calculated by subtracting from the amount described in 15 U.S.C. 1703(d)(3)(B), the greater of:

(1) Fifteen percent of the purchase or lease price of the lot (excluding interest owed) at the time of the default or breach of contract or agreement; or

(2) The amount of damages incurred by the seller or lessor due to the default or breach of contract.

(b) For the purposes of this section:

Damages incurred by the seller or lessor means actual damages resulting from the default or breach, as determined by the law of the jurisdiction governing the contract. However, no damages may be specified in the contract or agreement, except a liquidated damages clause not exceeding 15 percent of the purchase price of the lot, excluding any interest owed.

Purchase price means the cash sales price of the lot shown on the contract.

(c) The contractual requirements of 15 U.S.C. 1703(d) do not apply to the sale of a lot for which, within 180 days after the signing of the sales contract, the purchaser receives a warranty deed or, where warranty deeds are not commonly used, its equivalent under state law.