first of all you misread my post 150W not 150$ :)) I said that I was unable to find cheap ballast for 70Watt or 100Watt lamp, so I had to buy 150W ballast and HPS lamp. it costed 55eu, 29eu ballast, 14eu for the lamp, 5 for E40 socket and 9 for delivery. Reflector I am doing myself, I will adapt...