Are they sold under the Siemens brand? I have not seen them at the Home Depot stores around here. I bought one LED bulb for experimentation, a 60 watt equivalent bulb from Samsung. It's very bright, and the color is like an incandescent. I use it in my reading light because it generates so very little heat compared to the incandescent. But it was $30. They'll have to get much cheaper before I get more.
WHOOPS- Meant Philips. Not Siemens. --
TheseMy local Home Depot was selling them for $13 a piece. (the above link still has them over $20) They were $15 a few weeks ago. I suspect that folks round here don't buy em because they resent being told what light bulbs to use, and figure this is just another greenie-hippie crap ripoff like CCFLs are.
But even at $30, they will probably pay off just on durability. A bulb you only replace every 20 years is going to cost less than one you replace every 1-2 years.
Add in the energy savings of running 13 watts instead of 60 watts and even at $30 its likely to be at least a wash - providing they actually last the rated 20 years and don't crap out early ( my oldest are 4 years - different - cheap, off brand with a more green CCFL like color - and no failures yet..) The best part is you will very seldom have the experience of flipping a switch and still being in the dark.