Agreed with you there. Guy wanted to sell my friends and I a Mercedes Benz V12 Biturbo. For an unbelievably low price, because he couldn't get it to run. So we went over thinking, sure, why not, let's see what we're in for. Well it turns out there's no physical key for the ignition, so you can't start the car without the fob. But even more hilariously, even if you have the fob, you can't start the car if the car's been left with a dead battery for too long, because then the backup battery for the security system fails and the only solution is to have the vehicle towed to a Mercedes dealer along with you and all the paperwork proving you own the car so they can install a brand new security computer and give you new keys.

Needless to say we walked away and wished him luck.

Here's me wishing you luck that the slipped rotor has been the only issue this whole time. :)