I doubt it has any more then 256MB of RAM, but I agree it's probably only worth about $25-$50.$100?! Oh man, This organization out here called free geek gives P3 systems out for free all the time, If they were worth that much they'd be thousandairs!
I say $25-50, no more. Basing this purely off the processor, it Probably has 256-512mbs of Pc100 SDRAM, 10Gb HDD, Cd-rom, etc.