I have to tell you guys, this is one of the best investments I have ever made in a tool. As I remember off the MAC truck they were about $100 for the pair.
Email Unitec, the maker off the link below and see who you could buy it from locally and I would bet it will be much cheaper.
The "Speed blaster" on it's own is a great sand blaster. I have a Harbor Freight pressure blaster that I set aside after finding out how nice this tool works. Now, I am not doing full frames or something, but a set of wheels I did went very fast.
he "Hot spot" will enable you to do small spot blasting without blowing a single grain of sand! I am not kidding, you could spot blast a part on your dashboard of a finished car and not get a grain on the apholstry! It is SUPER for cleaning up spot welds or welds prior to filler work.
Check them out at the following links.