So, AtSpeed returned my inquiry. They said "they usually run between $1000-$1500. It all depends on how bad the damage is and whether or not you would like the reinforcement kit. So, without the kit around $1000-$1200 and with the kit $1200-$1500." Now, they also said that they've only done a few of the repairs and reinforcements, but I'm not doubting their work.
RRT was $1768 +\- $500. I'm also checking with Induktion Motorsports since they did quite a bit of work on my VR6. They fabricate a lot of stuff, so I'm taking it to them tonight to have them take a look and give me an estimate. The only thing is, I dont think they've ever done a repair\reinforcement on an E46 M3 before....but then again, their techs are use to repairing AWD Audi's and 337's so I have a bit of confidence in them.