I've been told I could have set up a reef cheaper than my high tech planted tank... so, its not cost.
I'd say its easily 3:1, at least around here.
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry