you want a cheap gym? simple. your home is your gym. your body is your weight (calisthenics). the curb outside is your treadmill. don't give yourself an excuse to limit exercise to the gym only. exercise can be done anywhere and has proven to be effective when you don't associate exercise with the gym together.
now, the guys in the video may look jacked, but they worked their way up to it, and it was from working out outside of the gym. Basically, compromise your workout for your level of training, and work your way up. i'm not saying to do pullups on the traffic light, im just trying to prove the point that workout does not require a gym, that's where they drain all that money from you guys.