We started CD'ing my son when he was 6 months old, and have been using the same diapers with my now-1 year old daughter. It's been over 4 years since we started cloth diapering, and in that time we've only had to buy diapers a handful of times. We spent a couple hundred dollars on cloth diapers up front, while others are spending thousands of dollars on disposable diapers every other week! It's awesome!!