This is just a helpful tip if your wondering how many diapers you will need, this is just a approximation every baby is different. I have 4 groups to try to get the best estimate, from the first Girls in a study of 300, second Boys also in 300, the third is from the Ultimate diaper check list on pinterst, and the forth is from a 9 month study also from pintest. I used Walmart store prices because there is a walmart everywhere. Once again just a approximation need help putting in your own prices from choice stores/brands just let me know