I picked up a bunch of 60 watt incandescents last weekend for 25 cents a 4 pack. At about 6 cents a bulb, I figured it was a good deal even if they last a few months.
I'm not sure if they're a good deal or not. I replaced almost all my lights with compact fluorescents. No, it wasn't for the environment; they actually are much worse for the environment. It was for money and making some rooms brighter. On paper, they save you a bundle over the long haul in electricity and cooling. Also, I put a 23 watt CF (100 watt equivalent) in a 60 watt incandescent socket, and the room is much brighter.
The problem is the lie that they last longer. Talk to anyone who uses them, and you'll get the same story: They burn out a lot. I follow the directions and don't put them in enclosed fixtures, too. Some do last a long time, so it tends to make me think the problem is in the manufacturing. My solution is to try that 7-year warranty. The next time I am saving the receipt, pinning it to the pack, and putting back every bulb that fails. When it's full, I'll send the pack back.
I haven’t checked for years, but you should still be able to buy 69 watt traffic light bulbs from electrical supply houses. Those last much longer than a few months.
You can get incandescent light bulbs rated for 25,000 hours that are used by the hospitality industry. If you use them for an average of 7 hours a day they’ll burn out in just a little under 10 years and cost about a buck or less per bulb depending on how many you buy.
https://www.nathosp.com/product/25k19_c/standard_incandescent_light_bulbs
Once you stock up all you’ll have to do is watch out for the light bulb police who’ll be monitoring everyone who might be using those unauthorized, evil incandescents!