A firm that sells​ e-books - books in digital form downloadable from the Internet​ - sells all​ e-books relating to​ do-it-yourself topics​ (home plumbing,​ gardening, and so​ on) at the same price. At​ present, the company can earn a maximum annual profit of ​$40,000 when it sells 35,000 copies within a​ year's time. The firm incurs a 50​-cent expense each time a consumer downloads a​ copy, but the company must spend ​$100,000 per year developing new editions of the​ e-books. The company has determined that it would earn zero economic profits if price were equal to average total​ cost, and in this case it could sell 30,000 copies. Under marginal cost​ pricing, it could sell 110,000 copies. In the short​ run, to the nearest​ cent, what is the​ profit-maximizing price of​ e-books relating to​ do-it-yourself topics? ​$nothing. At the​ profit-maximizing quantity, to the nearest​ cent, what is the average total cost of producing​ e-books? ​$nothing.