Mickey Mouse tells Betty Boop that he would like to purchase her collection of rare artwork so that he can resell it at an auction in Paris. Mickey Mouse offers $100,000.00 for the art. Betty Boop accepts his offer and Mickey Mouse gives her the money. They agree that Mickey Mouse can pick up the art on June 20. The market value at the time of the acceptance is $100,000.00. On June 19, the market value of the artwork increases to $150,000.00 due to a change in market conditions. On June 20, Mickey Mouse arrives at Betty Boop's house to take the artwork. Betty Boop refuses to give it to Mickey Mouse and instead offers to return his $100,000.00 payment. Mickey Mouse refuses to take the money and instead sues Betty Boop for breach of contract. What remedies can Mickey Mouse claim in his suit? Fully explain your answer.