$1.40 isn't a bad price for a decent quality CFL, but the PGE rebate (for Bay Area electric customers) makes these FEIT Conserv-Energy bulbs cost 65¢ each. That's actually less than incandescent light bulbs at the grocery store. As for the color temperature?
It's not bad. These are warm white CFLs. They take about a minute to come up to full brightness; we could not perceive any hum or flicker.
With the cost of energy going up and up, CFLs, even if you live in an area where your electric utility isn't pushing conservation, will literally pay for themselves. If you're concerned about the mercury content in CFLs, we've taken on that issue and nine more in this post.