I replaced all three sensors and the CPS ran me $119 a piece and the MAS cost me $449. Everything took about 1 hour to install. The MAS took about 1 minute. I'm glad I did these all myself instead of having a shop charge me outrageous amounts of money to bullshit me and tell me these were gonna be a pain. Also It never hurts to ask the parts counter people if they can do better on the price. I asked the girl and gave her a wink and she took 10% off just like that. In my case it came out to over $60 off. It never hurts to ask.

I got my parts at Chapman BMW in Scottsdale AZ. In case there are any AZ people reading this.

Thanks for the help everyone.