Bramble Corp. Inc. had a beginning inventory of 100 units of Product RST at a cost of $8 per unit. During the year, purchases were: Feb. 20 610 units at at $9 $10 Aug. 12 Dec. 8 385 units 100 units $11 $12 May 5 485 units at at Bramble Corp. uses a periodic inventory system. Sales totaled 1,440 units. (a) Your answer is correct. Determine the cost of goods available for sale. The cost of goods available for sale $ 16575 (51) Calculate average cost per unit. (Round answer to 3 decimal places, e.g. 2.237.) Average cost per unit $