Geraint from the UK wrote:-
"I picked up the Energy board on ebay for £200. It has been restored but the previous owner had Simon sign it then lacquered over it. I am going to remove this. I emailed Simon and he tells me it dates from around 81'.
I got the Lazor zap as a private sale. It was advertised on a forum for over a year before I stumbled upon it. This cost me £150."