With shipping from the UK it's $145. Still not bad compared to the prices being charged for used CDIs. When I started this adventure I wanted to see if my "parts bike" would run. The success that the GY6 ignition enjoyed being adapted to other machines got me curious and at under $20 I figured it was worth a shot. In that respect the experiment was a success. The bike's motor seems to be in sound condition and I have a cheap, functional ignition system, albeit with a two step advance instead of a curve. Then I heard about your experiences with the Gonzo ignition. My curiosity was piqued. I now have all the necessary parts, including a suitable coil, assembled and hope to get it installed by spring. I'm having a good time playing with this old junker and so far I have less than half the cost of the proper CDI invested in both systems. Win-win in my book.