The car is obviously a minter...But, before I would want to part with any cash, I would insist that the armoured door lock plate were removed for inspection, expect to find damage around the thick end of the door handle, as very often these were fitted, only to cover damage!!
Deadlocks would have to go as well!, theyre only there because an insurance company insisted on them!
If the doors were damaged, under the plates, and you got shot of the deadlocks, to bring it back to O/E spec, then expect to pay around £6/800 to sort out the job properly, also for that kind of money, I would get an independent inspection done, any cost involved, could be covered by re negotiating the price...peace of mind!
Tom