If you're interested in knowing the details, you can use the following info which I have scooped up while shopping for my order:
3-er sedan - $1000
3-er coupe - $1500
5-er - $2000-2500 (I believe sedan vs coupe - didn't care to find more as I'm not interested in that segment)
6-er - $3000
7-er - $3500
That's what the dealer said is from BMW NA.
PS: let me know if you find a good ED-friendly dealer in the area... I'm hunting as well. Thanks!