I find where I am (Philly PA US), PIII's can be had for free, if you're willing to wait several weeks until an opportunity comes up. If you want one to play with right away, you can find one for sale very cheaply.
I don't generally have much interest in them - don't have space for large towers in my place. But a few months ago I did pick up a small lot of them (from a private school that was upgrading), and I got a very cool Gateway E1400 in the bunch. It's pretty compact - 11"Wx14"Dx3"H - has a sturdy metal case, and is dead-easy to open up and service. It's a PIII-600, and with 384MB RAM installed runs Win2K Pro and DS Linux very nicely.
The other PIIIs in the lot I got were large towers. I used their RAM to upgrade the E1400, and then parted out their HDs and optical drives to folks who needed them. The cases and mobos are sitting in my basement if anyone has a need.
Best,
Matt
