Ryan's right, this is highly unethical but hey, we all know that most dealers are driven by greed only and nothing else.
BTW, you wouldn't loose 50% in 4 months if you were to trade back your car.............guaranteed.
We also don't make a 50% profit on a car we sell, the average gross profit on a car is less than 15%, I do know.
So it is a completely different ball game. IT is quite obvious that these two crooks, sorry I should say honorable dealers, were in to squeeze all the juice out your veins.
This is trully pathetic and do feel sorry about your mistfortune.
It is too easy to simply flip the page and say "business as usual", I'm sorry but I dissagree.
It is not because it is common practice that it makes it right, does it ?

All the best mate.