Calculate the total number of units available for sale and the cost of goods available for sale from the inventory of peat moss for D.J.'s Nurseries: D.J.'s Nurseries Peat Moss Inventory Date Units Cost Per Unit Beginning Inventory, January 1 200 $11.46 Purchase, March 10 160 $11.70 Purchase, May 16 180 $12.10 Purchase, October 8 250 $12.50 Purchase, December 6 150 $12.40