Eggers Company reports the following for the month of June. Date - Explanation - Units - Unit Cost - Total Cost June 1 Inventory 128 $5 $ 640 June 12 Purchases 395 6 2,370 June 23 Purchases 214 7 1,498 June 30 Inventory 246 A sale of 438 units occurred on June 15 for a selling price of $9 and a sale of 53 units on June 27 for $10. Calculate the average cost per unit, using a perpetual inventory system. (Round answers to 3 decimal places, e.g. 5.125.)