It was 100w "in old money"
Pricing up the equivalent in "new money" Energy Saving Variety -seemed to be about two or three quid each.
Imagine my suprise when walking around Tesco I saw some "Energy Sticks" 10,000 Hour on offer at 10p - YES NOT A MISPRINT TEN PENCE
These were alongside others that were two or three quid.
I ventured to the self scan till with three - and yes they were only 10p.
They take a bit of time to "warm up" and may not last the 10,000 hours but at 10p who cares