I pulled this mobo out of service from a PC at work because it had bad caps. Replaced the bad caps and now it's good to go. Included is the motherboard, 2 sticks of ram, heatsink, and I/O plate. The Intel Celeron D @ 2.93 should work well for a good chunk of the games in MAME. Or, build a nice little kids PC out of it.
$5 + shipping and it's yours.