Socket 370 boards

Anybody know of a good source (read that inexpensive) for socket 370 mainboards? All of the major retailers don't seem to have any links to any. I have a couple of 1G Celerons laying around and I was thinking about building a couple more machines. Something that is mildly overclockable would be okay.

Newegg has some, but they are about $60. I would check ebay.