Castle TV, Incorporated purchased 2,300 monitors on January 5 at a per-unit cost of $189, and another 2,300 units on January 31 at a per-unit cost of $282. In the period from February 1 through year-end, the company sold 4,200 units of this product. At year-end, 400 units remained in inventory. Assume that the replacement cost of this monitor at year-end is $270 per unit. Using the first-in, first-out (FIFO) flow assumption and the lower-of-cost-or-market rule, Castle TV should write down the carrying value of this inventory by: