I find it hard to prove such saying that women are more economical than man. First of all a lot depends from a person and how that person was raised. Second, what does "more economical" really means? Women and men have different tasks, different work, different needs. For example while buying food, women will spend less than men, but they both will cook different meals. Men would spend less in building material store. Third, I have never heard that men would spend whole salary on a bag and shoes (emotional purchase). As well as I have never heard that women would buy as huge as possible tv (even if it would fit poorly in the room) just because it is big and bigger than neighbors tv.