A purchaser‘s remedy for errors in or omissions from the membership camping contract, the materials delivered to the purchaser at the time of sale, or any of the disclosures required in section 557B.13 is limited to a right of cancellation and refund of the payment made or consideration given by the purchaser. However, this limitation does not apply to errors or omissions from the contract or disclosures or other requirements of this chapter which are part of a scheme to willfully misstate or omit the information required. Reasonable attorney fees shall be awarded to the prevailing party in any action under this section.