Roxanne made a guaranteed reservation for a single king room at Circus Circus for one night and pre-paid the $40 rate. When she arrived at 11 pm, the front desk clown told her there were no rooms left and refunded $40 to her credit card. Roxanne said she didn't want a refund, she wanted a room, but the clown said she arrived too late, so there was nothing they could do. Then Roxanne took an Uber for $12 to the Wynn, where she paid $600 for a king suite for the night. When Roxanne sues Circus Circus for breach of contract, how much will she win?