*BE6-9 Gregory Department Store uses a perpetual inventory system. Data for product E2-D2 include the following purchases. Number of Date Units Unit Price May 7 $10 July 28 30 13 50 inventory schedule for the above transactions using (a) FIFO, (b) LIFO, and (c) moving. On June 1, Gregory sold 26 units, and on August 27, 40 more units. Prepare the perpetual average cost. (Round average cost per unit to nearest cent.)