OP
joehat
Not a customer though, it's a mate with not a lot of money. As for cost of replacements, you'd have to replace 10 or 15 lamps in order to get your money back.
I've had customers say they only last 6 months, it's the doesn't natter if rusts a little as you don't need to change lamps, also the energy saving over 5 years alone will be the difference, I wasn't saying don't, just I feel it's a lot better that's all