Number 1, its been ragged. Its been robbed for some bits but its been ragged in the process and probably to within an inch of its life too.
iirc if the repair is more than 20% of the value of the car then it will get written off, so that side of things isn't suspect.
Presumably you need to put a seat in it and also wheels? And sort the bumper? If thats the case I wouldn't touch it at that price - too expensive. sl114 on here has got his for sale with lower mileage, newer plate, mint and only a couple a grand more.
Tbh, even if you didn't have to put those things on I still think its too expensive, especially if it is showing as a repair. Bear in mind you can see the damage and know whats gone on - is a potential future buyer going to be able to do that???
I'd say theres better cars out there mate and I'd walk away.