Commodities by Circe
http://www.sinful-desire.org/archive/viewstory.php?sid=1812&warning=5
Jared and Jensen are two orphans who have been failed by a system that just doesn't care. When they are kidnapped by an evil gang intent on making a profit they meet and fall for one another in a dark and mysterious place Called "The Club."

A Kept Boy bu poisontaster
http://poisontaster.livejournal.com/417962.html
(CWRPS AU, primarily Jeffrey Dean Morgan/Jensen Ackles)
A Kept Boy is an RPS AU involving slavery, abuse (adult and child) in all forms (verbal, physical, mental), inequalities of power, and dark, adult concepts regarding same. At heart, it's a love story, but it goes through some bad, dark places to get there.

Sins of the Innocent by reapertownusa
http://reapertownusa.livejournal.com/24943.html
Dean has always known what he is and what it takes to control the demon inside of him. He and his brother were raised hunters, living isolated from the rest of society to protect both themselves and innocent civilians. When everything falls apart, they struggle to find their way in a world they don’t trust. They come to discover that they were never as alone as they thought and nothing is what it seems.

Very Yes to Commodities! It's really very good, though pretty dark.

I've actually read AKB (tons of times actually, love that verse) and Sins of the Innocent but I'll have to go check out Commodities! Thanks!