I'd ask myself why the photos are taken in a workshop with other bikes in it (not a salvage yard lockup) and they aren't repairing it themselves to make a profit ?
My guess is that there is little profit to be made from it, although if you are buying it to keep and have the skills and time required to fix it for yourself, maybe it's worth having ?
If I was looking to buy it, I'd telephone BMW customer service with the reg plate and find out about it, supplying dealer etc, chances are they (the dealer) will have seen the bike post crash and produced a repair estimate - complete with parts required. They might even pass your contact details onto the previous owner so he can tell you about the crash (and his broken wrist where the bars kicked back at him - my guess )