Now incredibly cheap, and I have one on the way. 

I just need to decide on a suitable airframe, my initial thoughts:

He-162, international, USA, AUS

Phantom, international, AUS, EU, USA

Sonic 64, international, EU, AUS, UK, USA 

or RadJet.international, AUS, USA, UK, EU

RadJet ARF, international, UK, EU, USA, AUS

For now this will just be links to good resources that I have found. More to come as I learn more.

Bruce of course has the best pulse jet videos and is definitely the most public expert.