Discounts on 650 i Cabrio used cars via BMW AG

Hello BMW-Fangemeinde, looking for a very well preserved 650 i convertible. The NP for a car was around 142,000 €. After about 12-16 months with about 16,000 KM this vehicle was sold with about 45% discount via a BMW dealer. Unfortunately not to me. According to the salesman the head of the branch had bought this cheaply through the BMW management. It would not be a BuyBack vehicle. Who knows about the purchase – or sales procedure. Where there is the most discount e? Where can I buy such vehicles cheaply? Only about Haendler? Annual car, factory equipment etc. pp., since the new car with this price of 142,000 euros and a discount – so far of 14 percent is still too expensive for me, or the car is not worth it. Please only sound answers to this! Thank you, as always in advance for the quick answer here in the forum.