On January 1, 2010, Reston Co. purchased 25% of Ace Corp.'s common stock; no goodwill resulted from the purchase. Reston appropriately carries this investment at equity, and the balance in Reston's investment account was $720,000 at December 31, 2010. Ace reported net income of $450,000 for the year ended December 31, 2010, and paid common stock dividends totaling $180,000 during 2010. How much did Reston pay for its 25% interest in Ace?