Take your car to a bodyshop and have them provide a pro forma invoice for the cost or repair. Often, the people who do not believe what it cost, have no foundations of knowledge of the actual cost of repairing a vehicle. The fact your car was drivable has no bearing on the cost of repair. If the vehicle is at the insurers repairer, request a 'full engineers version' of the insurers Audatex assessment. This will have a full breakdown of cost.