While $200 might seem a bit high for a couple of straps, you have to remember it's the research and technology that make prices seem high.... The straps are much more than straps, as someone else mentioned padded handles, buckle to allow them to go from short to long etc... and the bar is a weighted bar.
I'm in the group of people that want to own one, with an older house I can always find a beam to drill into or I can install in the shop.