A store is abIn the Newsvendor model, the optimal service level should beout to launch its new product. The product costs $$100$ and is sold for $$300$ each. Products unsold at the end of the season are sold to a discount store for $$50$ each. However, during the selling season, if there is a stockout, the store will issue a $$20$ gift card to each unsatisfied customer. What is the value for Co$?$