Pearl, Inc. buys 1,200 computer game CDs from a distributor who is discontinuing those games. The purchase price for the lot is $8,600. Pearl will group the CDs into three price categories for resale, as indicated below.

Group		No. of CDs		Price per CD
1		100		$6
2		800		11
3		300		17

Determine the cost per CD for each group, using the relative sales value method.