A local caf entered into a contract for the purchase of three commercial grade espresso machines. The owner of the caf paid the supplier for the machines which were to be delivered three days later. As the machines were being delivered to the caf, the delivery truck had a small accident destroying all the espresso machines. The supplier is refusing to return the purchase price to the owner of the caf. What legal argument could the caf owner make to get a return of the purchase price? For the purposes of this answer, focus on the law and dont worry about the money. Be sure to explain the law you rely upon.