ETA: Found one. Thanks Sparks!!
Looking to get a Mac Mini for HTPC purposes. Condition isn't important, just need something that can run Plex and do 720p MKVs without issue.
Will purchase outright or trade a custom-built (and almost completely silent) HTPC in an Antec Fusion Black case.
AMD 4850e 2.4Ghz dual core
1TB Storage (expandable, there's at least 2 drive bays)
2GB RAM
Firewire
HDMI / Optical Out
DVD-RW
IR Receiver (Harmony Compatible)
PM if you're selling one.