Very broad question I know, but what sort of hours and cost is involved in having a game repainted ?
Difficult to answer due to variables such as the condition of the cabinet, the type of paints, the preparation and of course the quality of the stencils.
You can eliminate the quality of the stencils by using Gavin's products. His stencils are accurate and faithful to the originals. The Fathom I repainted does has small differences from the original, but it is correct in terms of the application of the colors. If you look at the USA based stencil provider is is completely wrong. So you are battling "uphill" from the start.
The cabinet needs to be straight and also structurally sound. MOST of the Ballys I restore need a new back panel as it is not plywood, but chipwood.
Paints - I would advise a professional setup, but it can be done with spay cans. The results might not be the same.
Preparation - Sanding, filling, fine filling, sanding, priming, sanding, filling, priming, base coat and then stencil application. This is where 95% of the time is spent. Just aligning the Fathom stencils took me 2 hours, so it had to be lined up within 2 mm each side.
It sounds like a huge and expensive undertaking. Doing a simple game like Ice Review uses the same principles and processes, but it takes minutes to apply stencils.
A simple cabinet would be just under $1000.
More complex would be $1000 - $1600.
Not all games would be the same. I dread the day I have to do my Xenon.. That would be the toughest.