Vaughn, Inc. buys 1,300 computer game CDs from a distributor who is discontinuing those games. The purchase price for the lot is $10,000. Vaughn will group the CDs into three price categories for resale, as indicated below.

Group		No. of CDs		Price per CD
1		100		$7
2		1,000		15
3		200		22

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