I have a brand new, unpacked in the box, Viair 85P portable compressor. Someone gave it to me as a gift but I already have one. $25 plus shipping. Also included is a 25' 12v extension cord.
Here's a link to the Viair 85P information page.
VIAIR Corporation - 85P Portable Compressor (P/N 00085)
Send me a PM if interested.