2005 Audi S4 6spd *NO RESERVE*

I have my 2005 Audi S4 that I am putting up for sale. This is a very fun car and pretty hard to find. It has a clean title and has 130k miles on it. It has a 6 speed manual and it is a Quattro (AWD). The S4 is based off of a A4 body but that's about the only thing it shares with the A4 as it has a 4.2l V8 DOHC, Recaro Seats, AWD, sport tuned suspension, dual exhaust and has every option possible for those who don't know what a S4 is. It was right about $50k in 2005. The car is a amazing car to drive. It runs amazing, it drives like a sports car but rides like a luxury car, it's the best of both worlds. The car sounds perfect as well as it has a exhaust modification, it is stock other then that. Everybody that rides or drives the car loves it and anyone who hears it isn't expecting it to be a Audi. It has newer tires all the way around with about 5k miles on them, new valve cover gaskets, new passenger from window regulator and fresh oil change recently. The car is a pretty nice car inside and out but it has a few rock chips and a ding or two, it's a normal used car but other then that it's in great shape. The a/c does not work and it hasn't worked for the last few months but I never hardly ever used the a/c as I like to drive with all the windows down and the sunroof open most of the time and the only other thing is the check engine light is on most of the time for one thing, which is the secondary air pump which is just for emissions purposes and is about $150 on eBay and it doesn't affect how the car runs. It also needs one other thing and that would be that it needs OEM or similar front brake pads because they don't have the shims on them from the factory and they rattle going over bumps unless you barely touch the brakes then it goes away. I had it checked out and thats what they told me but that's it. I just haven't fixed it because it doesn't affect the car and I can hook up a scanner to anyone who is interested in the car. Those are the only two things as I want to be as honest as possible and those are the two things wrong with the car. I just put new valve cover gaskets, oil change, 4 new tires and it just passed a state inspection a month ago for a year. I'm asking $6800obo which is very fair considering it still retails for $11,000 on NADA and I know the car has a couple of issues and I'm trying to be fair. I'm wanting to sell it outright but I would be willing to trade for another vehicle. I'm not sure what I want to trade for exactly so just send me your offers and we can go from there. If you have any questions please feel free to ask me any questions anytime! Thanks for looking!