I sent a PM, with what I thought was reasonable. To whoever does it, make sure you are including all costs in your assessment of what would be required. As has already been pointed out there are costs that were not addressed in the OP like transportation to the dealer from the airport, tolls when you hit the OK line, etc.
Make sure that you have all your bases covered or in the end you'll hardly be making any money at all for your services.
That's why you keep receipts of all expenses.