A mobile wheel refurbisher will likely turn up with a Dremel, a tin of filler and some paint. To do mine I was quoted £50 a wheel a couple of years ago.
Like Burner and Freddy said, find a proper wheel refurbisher who'll strip, clean, fill and repaint them - downside being you'll have your car on stands for a couple of days.
I had mine done at a local specialist for £47 a wheel late last year and I'm dead pleased with the results.