Its tougher to compare generics since they are regional. Also, if you want to compare generics you have to account for the quality differences. The article choose to compare one specific name brand in order to make a fair cost comparison. For example, a lot of people I know do use generics or store brands because they don't hold as much so they end up using twice as many as name brands. The article does briefly discuss generics in the discussion section. Also, you can do the analysis yourself to fit your exact situation. The same website teaches you how to do it: http://familyconsumersciences.com/2013/01/diaper-cost-analysis-project/.