I bought a bunch of Aero City parts off him that I’m pleased with. Got a monitor bezel advertised no cracks(small cracks), a control panel bezel, and a pair of the casters. All items in fair condition and reasonably priced.
I think $600 is a fair price for a sandblast and powder coat job. They also make a highly toxic paint stripper you can get in an aerosol can that would probably lift the paint off. Then he would just sandblast for the texture.