well, I think so, anyway. 
http://washingtondc.craigslist.org/doc/sys/182952982.html
$50 for a dual G4 tower 450 mhz, 128 RAM, no OS.
$20 for a 350-450 tower mhz G3, 128 RAM, no OS.
Not that i need an older tower, but I think $50 for a dual G4 is pretty fantastic.
http://washingtondc.craigslist.org/doc/sys/182952982.html
$50 for a dual G4 tower 450 mhz, 128 RAM, no OS.
$20 for a 350-450 tower mhz G3, 128 RAM, no OS.
Not that i need an older tower, but I think $50 for a dual G4 is pretty fantastic.