Retailer opened a baseball card store. On opening day, the baseball card store was very busy, so Retailer asks a clerk in the store next to help. While Retailer was out of the store and the clerk from the store next door was watching the baseball card store, a boy who had a large baseball card collection came into the baseball card store and asked to see an Ernie Banks rookie card. The clerk took the Ernie Banks rookie card which was in a plastic case and had an adhesive dot on the case which read "1200" and showed the card to the boy. The boy said to the clerk "Is this card really worth $12.00" and the clerk, who knew nothing about baseball cards said something like "I guess so" or "I'm sure it must be." The boy bought the card for $12.00. The true price of the card intended by the Retailer was instead $1,200. 

Can the Retailer recover the card from the boy? What are the legal rights of the Retailer and the boy?