"Matt" wrote in message
...
"Doctor Drivel" wrote:


So, £270 for 1000. Many people have about 50 of these lamps in their
homes.
£270 would last a hell of a long time. So if you pay £2 for one of
these,
quite a normal price, then £270 gets you 134 of these lamps. When you
have
50, in about 3 to 4 years time you probably would spent £270 on lamps.
So,
£270 up front may be well worth while.

Now do the same for the "one boiler would fill the baths in the whole
street" calculation.

If you don't know sums then do night classes.