I am not a collision specialist, but what I see here is a bit worrying.
The extent of damage is... huge. It is not just a parking collision. It was not a parking speed.
The door and bumper - sure, those are soft, but the fender, and especially in this very spot? That looks to me like a very large vehicle crashed into yours at at least 20 mph. Or maybe a trailer.
Was the car in the same spot when you came back?
As for full loss - hard to say from those pictures. The fender is ripped through. Hard to say about the wheel well. I doubt the frame is moved, although - again - hard to say. Both doors are damaged so is the quarter panel. Basically you are talking about replacing a lot of hardware in the doors and painting half of the car (and at this point it might be better to pain the whole thing).
I would say - depends on the writer.
If they are after good quality work - we are talking about 10k job (with parts).
That might be very close to 70-80% of the cars value.
However, there are shops that charge less per hour and will do the same job for less money and the final result is the same.
One might consider buying the car back and fixing it, but one must be aware that having a salvage tittle means not easy to sell... hence you better keep it till it dies.