Express Distribution markets CDs of the performing artist Fishe. At the beginning of October, Express had in beginning inventory 4,200 of Fishes CDs with a unit cost of $7. During October, Express made the following purchases of Fishes CDs. Oct. 3 5,250 @ $8 Oct. 19 6,300 @ $10 Oct. 9 7,350 @ $9 Oct. 25 8,400 @ $11 During October, 22,890 units were sold. Express uses a periodic inventory system.

Calculate weighted average cost per unit. (Round answer to 2 decimal places, e.g. 2.25.) Weighted average cost per unit $?