The kind of investigation to be conducted (which, for example, can be based on the level of a security clearance needed) will depend on the reason for the investigation. Different kinds of background investigations have different requirements for the scope of the investigative coverage to be obtained.
Instead of trying to measure every inch of masking tape used and every ounce of paint sprayed, auto-body shops charge a flat rate for materials. At a rate of $45 per hour on average, paint materials also contribute to the rising car bumper repair costs.
As far as a reasonable rate, there are also several factors to consider here as well. If the answer is yes then you should be willing to pay a premium for that since it is so hard to find. Most independent repair shops charge between $70-$90 per hour and most dealerships charge between $80-$125 per hour.