I think that, IF you're handy, AND you already have tools and wood and stuff laying around, THEN you could get started without spending more than a couple hundred. Otherwise, it goes up from there. So people need to be realistic about their own abilities for scrounging and for making stuff. If you're already good at it - you'll be able to get by cheap. If not (or if you have to meet some housing code stuff), you'll have higher expenses. Seems fairly obvious to me...