"William Sommerwanker is Wrong Again"
** A CLF that genuinely replaces a 100W bulb cost at lot more than $2.50 where I live.Even a "no brand" 27W CFL ( direct from China import ) sells for $ 8 to $10 each.
I worked out long ago that the break even point for a CFL occurs at about
1000 hours - but only about half of them make it that long ,without dying or losing almost half their light output..... Phil