Bayside Bookstore had 500 units on hand at January 1, costing $10 each. Purchases and sales during the month of January were as follows: Date Purchases Sales Jan. 14 380 @ $15 15 250 @ $11 27 250 @ $12 29 260 a $17 Bayside does not maintain perpetual inventory records. According to a physical count, 360 units were on hand at January 31 The cost of the inventory at January 31, under the FIFO method is: $4,120 a