On Tuesday, a hobby shop owner receives an order for a custom toy train that will need to be specially manufactured. That same day, the hobby shop owner begins building the toy train. On Friday, the buyer calls to cancel the order. During the conversation, the hobby shop owner insists on going through with the deal and tells the buyer (for the first time) that he has already started making the train. Is the buyer legally bound by a contract to buy the toy train? Why or why not? Please cite UCC to support your analysis.