Must be £50 paint £100 for artwork, you must remember if you get something sprayed rather than powder coated it does cost more, but if your doing something like a nomad then its the only way. I remember someone posted a photo of their giant anthem it had been put in the kiln to set the paint and the aluminum had slumped, the frame was a right off.
I had a steel bmx frame powder coated by a local engineering firm the paint was thick and glossy, but the colour choice was limited and the frame only cost me £50, no way ever would I give a nomad or intense to a powder coaters.

