I received an estimate from Mike based on description and photos of my 30 foot trailer. He estimates the cost would be around $9500 for full body paint. I imagine this does not include custom colors and graphics like the OP had done on his.
I am thinking I probably will have it done, either by him or someone closer to where the trailer is now. After watching his video and seeing the OP's trailer pictures I really like his work so it may well be worth the drive there and back.
I agree that it is a whole lot of money but as already mentioned, you cannot purchase a new trailer these days that is anywhere near the quality of mine and some others for that kind of money.
By the way, in all my years of traveling, I have only been asked once, at check-in, what the age of my rig was.
That age rule is just used to keep obviously run down rigs out of the campground. If your rig looks good and is well cared for I don't know of any campground owner who will turn down your business.:)
Barney