Arizona Mining sells its product, a rare metal, in a controlled market with a quoted price applicable to all quantities. The total cost of $5,000$ pounds of the metal now held in inventory is $$210,000.$ The total selling price is $$560,000,$ and estimated costs of disposal are $$10,000.$ At what amount could the inventory of $5,000$ pounds be reported on the balance sheet, if not at cost$?$