You can buy VERY GOOD cloth diapers on e-bay....You need to look for DSQ (diaper service quality) prefolds. I have purchased them several times for burp cloths. Not sure if you are trying to make them for the bum genious covers or the new other covers.
For me, it was worth the $14---and they have gone through 2 babies and are in great shape....ready for baby #3 due in a month.