The scrap value is how much a salvage yard would be willing to pay for a car/vehicle which has been involved in an accident (and deemed an economic write off - the cost of fixing it is more than the cost of replacing it).
The parts which have not been damaged would/could be used as replacement parts for other cars so have some value. The scrappage value of a car would be entirly dependant on what damage had been done to the car and how much of it may be reusable so nobody can really comment on if it was a fair price or not without seeing the car. With a scrappage value of €250 I'd assume a fair amount of damage had been done.
Again, not nearly enough detail to recieve a meaningful answer to this. The bad news, I'd assume very little! It depends on what work would need to be done to get the car running again. Look at the price of a 1996 Seat Ibiza, then take a huge chunk off it to take into account this would have been a write off.... the chances of you getting over (or even near) €2000 for a car still not running are very (VERY) slim!
Looking at cbg.ie
1996 1.4 Litre 100,000 Dublin 4 €1,500
So getting €2000 back on parts.... very unlikely!