This would easily cost way more than 5-6000+ to fix, follow the panel and see where it ends. That's not just something you can bolt on/bolt off, you have to cut/weld/fill/paint, plus there is very likely suspension damage...
He says it needs a new door..
Unpainted door shell from Ford: $753.10
Quarter panel: $732
Paint materials: $759 (I hit a deer with my car and I'm taking these numbers from my paperwork, they repainted much less on my car than they would on this car)
My labor charges for the deer hit were...
33 hours body, 25 hours refinish, billed at $42/hr (Magnum Collision, a shop that works on exotics) for a total of $2,436 in labor.
$4,680 assuming similar numbers to my car. My car actually ended up being close to $10,000 worth of damage and didn't get totaled.
This car would likely cost significantly more, welding sheet metal is time consuming and several panels would have to be prepped and blended for the paint to match. Plus who knows what hidden damage exists. Insurance companies know what they're doing, haha.