Remaining value and what another gives

Hy Folks, since I sometimes stand like the ox in front of the mountain the request to explain it to me: if I have an accident damage and the car is an economic total damage the replacement value is determined, as far as clear. Then one of the evaluators says what he has determined as the residual value – also so clearly. Now to the part where I have difficulties: The evaluator says now: replacement value 10t €, residual value 2t €. Rep. costs 12.000 € = economic total damage. If I have the wagon If you don’t want to sell the car to the one who doesn’t, then we can cut you the money you get by the 1000 difference. At the same time, however, I can still have the car repaired in case of an economic total damage and up to 130% of the replacement value go and the verse has to pay. There is the first crux point. The second is: if I have the car, the car will have to pay. I have to deduct the difference between the residual value and what the potential buyer has offered. Above all – as I understand it – if I do not go to a workshop. ???? What does it look like, by the way, if I have sold the car privately for more money than the residual value, then the verse must still pay the full difference between the residual and replacement value, or can it also deduct that more. Would be nice if there was someone there who wants to rebuild it. Thank you very much! Koyota