nice pic, big bang eh!
rough guess at local rates to me in east anglia i'd be lookin at at least £350 without replacing any parts.
biggest problem is that it has in all likleyhood twisted the chassis to some degree, the problem there is that to get it jig tested will mean that the entire car needs to be stripped down (engine bay gutted, back axle off)
and they charge £600+ for somehthing like that(when done professionally).
cheap option:[ sledgehammer and some hope is what is more likley though (i presume thats what you were looking at doing to fix the unwelcome inner deformation)]
not sure if your insurance co would not just go "tough, luck here's £50 for scrap value, bye bye"
has there been any rippling in the upper panels?
if so then its #####d, and will not brake or drive true without drifting when on a straight flat road. you will also find it will wear the tyres oddly,
You are gonna need to get the car full laser/camber tracked to see whats off line, £60 odd and a hour or so on a specialist ramp with pretty pictures of b4 and after on the cars geometry, specs and what it should be from new.
(quite often none of the figures bear any relation to each other, and(in my case) come with with the words..."sorry its the best we could do....." from the garage specialist)
[please dont give up, pessamissim is my speciallity, (especcially with my cars
as an afterthought..... wanna buy the blue car <<<<< PM me if interested