The balance sheet value of a firm's inventory is $70,000. Suppose that the firm purchases supplies at a cost of $2,000 and adds them to inventory. A day later, the market value of the recently purchased supplies changes to $3,500. Assuming no other changes to inventory, and using the historical cost method, what is the final balance sheet value of inventory? Note: Students with prior accounting experience should not apply the monthly "lower of cost or market" adjustment. This is a day-to-day fluctuation.