Cost for such system ( Ballistic rescue parachutes ) are much more than just a few thousand dollars. When you get the FAA involved costs for a single bolt will skyrocket. In order to manufacture such a system for aircraft you must secure an STC from the FAA (http://www.faa.gov/aircraft/air_cert/design_approvals/stc/), this alone can cost the investor hundreds of thousands of dollars. Which he would have to pass along to the consumer. Each individual aircraft would need an STC as well if the system was not designed for that exact airframe. Cirrus aircraft all come with the CAPS system. http://cirrusaircraft.com/parachute/