(Solved): Sheldon saw an offer on eBay to purchase a vintage LEGO model of the Star Wars Death Star. He bid $1 ...

Sheldon saw an offer on eBay to purchase a vintage LEGO model of the Star Wars Death Star. He bid $1,500 on the model and ran to tell Leonard what he had done. The more he talked about it, the more Sheldon began to suffer "bidder's remorse." He called Howard and offered to sell him "a vintage LEGO model of the Star Wars Death Star for "a fair price." Howard excitedly agreed, and Sheldon sighed with reliet, "If Im the high bidder and have to buy it, I can get my money back." Sheldon won the bid, paid for the Death Star with his PayPal account and was awaiting delivery when Howard showed up at his apartment. His earlier excitement over the Death Star now dissipated, Howard reported he no longer wanted to purchase the Death Star. Sheldon said, "A deal is a deal. I already sold the Death Star to you, and all I want is the fair price of

I paid for it--bazingal Will you be paying me

in cash or by check? Howard claims he is not contractually obligated to purchase the Death Star. What best describes his reason to say so?