Durable Inc. is considering replacing an old drilling machine that cost $200,000 six years ago with a new one that costs $450,000. Shipping and installation cost an additional $60,000. The old machine has been depreciated using the straight-line (SL) method with no salvage value over an estimated 8-year useful life. The old machine can be sold for $40,000 now or $10,000 in two years. Management expects increases in net working capital of $30,000 (inventories up $10,000, accounts receivable up $32,000, accounts payable up $12,000) if the new machine is acquired. Durable's income tax rate is 30%.

What dollar amount should be used for the net original investment in time period 0 to conduct this replacement decision?

Group of answer choices

-$500,000

-$510,000

-$497,000

-$470,000