Damages [in law].............?

Jean entered into a written contract for the purchase of a television set for $300 from Local Department Store. The same model television set was selling in all the other stores for $400. Assume that Jean was ready and willing to pay the $300 contract price, but Local refused to convey the television set to her. Jean sued for specific performance and, in the alternative, for money damages. Under the circumstances what relief is Jean entitled to?