Not many years back, these compact fluorescents (CFLs), now $5 for 4, were just dipping below $10 each.
Now, LEDs have dipped below $10. These have an interesting flat design, and their neck is narrow enough to fit into sockets on some light fixtures where only incandescents would fit in the past. This particular sale is at Home Depot, hopefully ongoing.
The packaging said they last 22.8 years, and that despite their flat appearance they broadcast light evenly in all directions. If we trust the predicted lifespan, the lightbulb could outlast the lamp its screwed into. LEDs also have the advantage of being dimmable and instant on. The CFLs take a minute to reach full brightness.
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