I decided to do some calculations to see if LED is worth the cost. Assume that the bulb will be used for six hours every night, for a total of ~2200 hours per year. Prices taken from bulbscanada.
$0.55 for 60w incandescent, rated 6000 hours
$2.45 for 13w CFL, rated 6000 hours
$16.00 for 6.9w LED, rated 40000 hours
LED life is 18 years, meaning I would use 7 incandescents or CFL for every LED.
Purchase price over 18 years:
$3.85 incandescent
$17.15 CFL
$16 for LED
I pay 6.5 cents per kilowatt hour (we have "time of use" rates in Ontario, this is the off-peak rate), so the energy rates per year are:
$8.58 incandescent, $154.44 for 18 years
$1.86 CFL, $33.48 for 18 years
$0.99 LED, $17.76 for 18 years
Total cost of ownership for 18 years:
$158.29 incandescent
$77.58 CFL
$33.76 LED
Conclusion: you will pay $43.82 more over the life span of an LED bulb if you use CFL. Over the life span of these three bulbs, you would pay $131.46 to own and operate equivalent CFL bulbs. The Philips bulbs in the article have a $102 premium price. It is actually cheaper to buy these "expensive" Philips LED bulbs than any other bulb type!
Umm, I pay 21 cent per kilowatt hour, 2 months ago was $0.24
My CFL bulbs cost around $1 each and LED around $4 each. So just in half a year of using either CFL or LED I'm saving money from there on. I think you need to go to Costco or Sams to get them cheaper.