Blogged about this 2012 BMW Alpina B7 here in August, 2019 when it was selling for $37,998 – almost $100,000 less than new. And now this unicorn is mysteriously up for sale again by the same Pompano Beach, Florida CarMax dealer for $39,998 – $2,000 more than it sold for by the same dealer in September, 2019. – and with another 1,000 miles on it  The vehicle history on the CarMax website clearly lists the car as having sold then. Can’t believe it was returned under the seven day return policy and off the market for six months. Not sure what gives – why it’s back and why the price increase – and the dealer won’t answer my questions on the phone.
In short, the 2012 B7 is powered by a 4.4 liter, twin-turbo, 500hp V8, a six-speed ZF automatic transmission, and all wheel drive. The car does 0-60 in 4.5 seconds and is limited to 174mph. Maybe 500 imported annually. It’s still a bargain IMHO, and still worthy of MaxCare to protect against huge repair bills. Find it (still) here in Pompano Beach.  
Pure speculation: the car was returned because of severe mechanical defects discovered after the sale. The Florida CarMax spent some coin fixing the problem, so the price is higher to try and recoup some of that cost.
Considering how rare B7s are, they might just succeed in reselling it at this higher price point.
Sounds like red flag to me. Found issue, returned to dealer. Dealer fixed issue but added costs on top. No problems under max care, but I’d expect price drop after 6 months, instead of increase