Cost of painting a trunk

[intocarss]

Here's the story...

Where I work, the trunk and spoiler on a customers 68 camaro got bent bad. It has been replaced with a new un painted NOS trunk and spoiler
The car has not been driven and the paint job on the car is new and never really seen day light yet.

The guy who orig painted the whole car is a p/t amateur painter who paints in his garage (no booth) is saying to paint the trunk & spoiler (British green with silver Z-28 stripes) is going to cost us $3500

What do you think it should cost just for the re paint on the trunk?? Thank you