John and Susan Verba sold a Vermont lakeshore lot to Shane and Deborah Rancourt for $115,000. The Rancourts intended to build a house on the property, but after preparing the land for construction, they learned that a wetland protection law prevented building near the lake. They sued, seeking rescission of the contract. The trial court concluded that the parties had reached their agreement under a "mutual, but innocent, misunderstanding." The trial judge gave the Verbas a choice: they could rescind the contract and refund the purchase price, or they could give the Rancourts $55,000, the difference between the sales price and the actual market value of the land. The Rancourts appealed.

Argument for the Rancourts: When the parties have made a mutual mistake about an important factual issue, either party is entitled to rescind the contract. The land is of no use to us and we want our money back.

Argument for the Verbas: Both sides were acting in good faith and both sides made an honest mistake. We are willing to acknowledge that the land is worth somewhat less than we all thought, and we are willing to refund $55,000. The buyers shouldn't complainthey are getting the property at about half the original price, and the error was as much their fault as ours.

Please rule on this case using the IRAC method of case analysis.