i have a townhouse with a huge basement. got a power rack, 320lbs of plates, 2 o. bars, heavy bag, and dumbbells (25-75lbs) for $300 on craigslist. plus the plates, o. bar, and bench i already owned (and got for free). i also welded together a pullup bar and bolted to the rafters.
so after just finding an affordable place to use all this ****, i have $300 into a home gym with 500+lbs of plates, power rack, pullup bar, and a whole station dedicated to deadlifts, t-bars, pendlays, etc. **** the gym, **** machines... train at home.
also, the author has a bunch of youtube vids, dude is a beast