Sharon contracted with Jane, a shirtmaker, for one thousand shirts for men. Jane manufactured and delivered five hundred shirts, which were paid for by Sharon. At the same time, Sharon notified Jane that she could not use or dispose of the other five hundred shirts and directed Jane not to manufacture any more under the contract. Nevertheless, Jane proceeded to make up the other five hundred shirts and tendered them to Sharon. Sharon refused to accept the shirts, and Jane then sued for the purchase price. Is she entitled to the purchase price? If not, is she entitled to any damages? Explain.