I have the original Total Gym Pro that I bought off eBay about five years ago. It's still working great! And yes, I know these aren't Total GYMS, but I've seen both and they are the same thing.
The one thing I always warn people about, though, is how big these things really are. When I first set mine up, I was surprised at how much room it really takes up. So here's what to do: figure out where you want it. Lay down on the floor and put your arms straight out. If you are close to hitting anything, reconsider the spot. Also, remember that these are quite long. I usually recommend a 6 foot by 10 foot spot.
Folding it is pretty easy, though moving it while folded be VERY careful not to get your fingers pinched.
All in all, I love mine and I'm happy I got it. It's bloody brilliant for physical therapy. It's great for both building and toning muscle. And, hey, if Chuck Norris backs it, you know it's gotta be good!
Also, as for the PA sales tax, this is because Amazon (who now owns Woot) has warehouses in the commonwealth.
Even with the tax...these are worth it!