Sounds like someone could not pay for it.
Is BMW offering .9% on this? If so, finance as much on that as possible as that is half of inflation. My local dealer told me I could get .9% on a used 2011.
This bring me to some pricing for you:
I have a black on saddle brown coupe with 15k miles and 33 months of original warranty with all of your options except nav and parking assist, but does include comfort access, for a listed $40k.
I also have a very close(hour and a half) space grey on oyster with aluminum trim sedan(11k miles) with 34 months of original warranty with all of your options except nav and parking assist, but does have heated steering wheel, for $37k.
Both of those prices are listed, no negotiations yet. That sedan is rock bottom, from what I can tell. Looks like a fantastic deal and I have emailed them on if it has .9% financing.