Randall Turner

I am thinking about installing some ceramic light bases and heat cages in the enclosures (Help take the edge off real cold nights sort of thing). But they don't seem to be all that commonly available anymore. Maybe I'm not looking in the right place. Any suggestions where to find them? I have one installed in one enclosure but it was narrow and required me to hunt down a small base that was extortion level price. If I have to I suppose I can go that route again. But would prefer to stick to the less expensive standard stuff.