Mullins Distribution markets CDs of numerous performing artists. At the beginning of March, Mullins had in beginning inventory 2,500 CDs with a unit cost of $7. During March, Mullins made the following purchases of CDs. 2.000 @ March 5 March 13 $8 $9 March 21 March 26 5,000 2.000 $10 $11 3,500 During March 12,000 units were sold. Mullins uses a periodic inventory system Determine the cost of goods available for sale, The cost of goods available for sale $ Calculate Average Cost. (Round answer to 3 decimal places, es 5.125.) Average Cost $