eBay can be a great source for bulbs, particularly if yours hasn't
already burned out so you need one *now*. I laid in a nice supply of
CZX lamps for my Bolex awhile back by bookmarking a search (or you can
set up an RSS feed!) . . . . and then you play the waiting game. Once
you are in despeate need and have to get one "yesterday," you wind up
paying "full" price, which an be expensive.

Albert Steg