Ok...This thing has been discussed before and I am not going to spend over $100 or $200 on 1 or 2 capacitors. I finally made one myself and it all cost about $10. Initial test result: I can definitely feel less burden on the engine with the a/c on, and idle speed stays about the same with or without a/c. It is easy to make and whether it is useful or not, it is only $10.
