One piece of advice on the purchase of a Total Gym - - As someone suggested, check eBay. I actually bought a Total Gym knockoff called the Total Trainer 3000; it's a fantastic gym. Comes with a few of the items optional on the Total Gym as standard equipment (pull-up bar, foot rest, leg wraps, etc). The Total Trainer was $300, MUCH cheaper than Total Gym. The people that I bought it from off eBay (fitnessbargains.com) were very professional as well, cleaned up a screwup with my payment in no time and shipped fairly quickly. Their ads also make a pretty good case as to why their gym is built better than the Total Gym, and I've had no problems after 6 months of use.
Also, AVOID the Total Gym knockoffs you can buy at CostCo, Sam's Club or WalMart; they're VERY cheaply made. Had a friend buy one and the frame welds cracked after 2 months

Not a very heavy person either, maybe 150lbs.
It's a good gym for weight training, but forget the cardio stuff they try to say it can do; it's not very feasible. Forget folding it up every day - a hassle. Does fold up fairly small though, maybe 4ft high, 1.5ft across and 8-10 inches deep.