http://www.paxxion.com/
They don't ask commission but a parking fee of 10 Euro (13$) per month per 100 pictures. You can set your own prices. Seems pretty bold, since they are nowhere in the Alexa ratings (5,000,000 or so) with no site info available.
Did my benchmark on "waterfalls" : 10 photos and most are crap.
But they claim to have 300 photographers, so that's 4,000$ per month guaranteed income for them. Not bad ;-)