You know, the really expensive ones with mercury inside that, if they break, you have to call in a HAZMAT crew? The ones the gubmint wants to make you use?
Schnucks has a sale on your basic incandescent bulbs, 60w, 4 per package, for a buck. That's a quarter per bulb. Sylvania is the brand, if I remember correctly. I bought a lot of them and will go back for more presuming they restock.