I busted my ass to land a job where I can earn enough money to waste all the money on homebrewing that I want to.... oh, and to post on HBT all day too.
Seriously though, this debate has been err debated to death already. There are equal camps of yes it does save money, no it doesn't, and I don't give a ship if it does or not. I liken the opinion that homebrewing saves money to the opinion that free energy machines are a step in the right direction. If you really want to prove to your SWMBO that it's cheaper to brew than buy, some of the Enron accountants might work cheap.