Configure your car at truecar.com to figure out invoice with options and to see what others are paying in your area then head over to bimmerfest-ask a dealer section to see what the latest residuals and incentives are from Jon Schaefer, then head to ridewithg.com to find out MF and use their calculator for a rough wag at what the payment should be.
I made my own lease calculator that is closely modeled after most dealerships pricing tools and Im able to get within about $1 on payment quotes.
I've dealt with a lot of dealers in the past using this process and have caught many of them trying to inflate my MF, add hidden fees, hide incentive money etc...
I will only deal with Steve Thomas BMW from now-on when purchasing new BMWs because they are strait forward and offer a great price up-front. Kind of takes the fun out of haggling because they are so reasonable!
Current Car: '13 SANTORINI BLUE E92///M3
--6MT/Speed Cloth/ZCP (ED Thread)
Former Cars:'10 E90 335i MSport
/ '07 Interlagos ///M5
/ '09 135i
/ '10 E93 335i