A few items for sale here at Hypnos HQ.

Mark of the Unicorn (MOTU) 828 firewire audio interfaceNote that this is not the 828 mk II, but still includes 8 analog ins and outs, stereo monitor outs, spdif in/out, ADAT optical in/out, front panel level knobs and headphone jack, very light and portable but requires AC power. Mac or Windows compatible (but I don't recommend this for people using Mac OS X 10.4 or 10.5 at least until MOTU updates their drivers).
$200 plus shipping
Digidesign Mbox USB audio interfaceCompact, portable, powered by USB cable. Mac or Windows compatible.
$125 plus shipping
M-Audio Firewire Audiophile audio interfaceCompact, portable, powered by firewire cable or AC power, 2 analog inputs, 4 analog outputs, spdif in/out, plus MIDI i/o so if you're looking for audio i/o and midi i/o this is a great deal. Mac or Windows compatible.
$125 plus shippingNote: these are not actual photos but are "swiped" from E-Bay in the name of expediency. Condition of all units is very good though there are a few scratches on the 828's case. If you want to see an actual photo before purchasing, let me know.
Also, I have not done much price research and if these prices are too high, I will consider lowering them or taking slightly lower offers after a week or so.