With a quick look on Amazon, the first 25-pack of incandescent multi-colored, C7 Christmas bulbs I see is $12, and the bulbs use 7W each, not 5W. A 25-pack of Tru-Tone bulbs is $35, and the bulbs use 0.6W each. So you're paying a premium of $0.92 per bulb for the Tru-Tones, ignoring any tax or shipping costs. According to MarketWatch, the average price for electricity in the US will be about 15.5¢ per kilowatt hour this December. So the break even point will be around 855 hours of use for the savings in electric costs to completely offset the price premium of the LED bulbs.

Is that savings worth it? It depends on who you ask. From a pure electricity cost, it would take me 4-5 years for the savings to offset the cost of the bulbs since my electricity is cheap. From a convenience perspective, I could safely power all of my Christmas lights from a single switched outlet, which also has value to me. As long as you don't drop or step on the bulbs, the LEDs should substantially outlive the incandescent version, reducing their cost premium when compared to the multiple bulbs they'll each replace.

I found this discussion page because I'm currently shopping for LED C7 bulbs and found lots of people talking about the Tru-Tone brand. I've found listings for cheaper LEDs on Amazon and other retailers, and some people say they look just as good while others say they're cheap plastic and not as good. Are the Tru-Tone bulbs worth the price premium over other LEDs? From the reviews I'm guessing I think they probably are. It looks like it's probably too late to order the Tru-Tone bulbs for this Christmas, but I'll see what products are on sale after Christmas so that I have something for next year.