That's a great price for sandblasting & powder-coating a WD-10! My only concern with powder-coating a machine is that it has to be perfect or the dents will show since you cannot have body work under powder-coating as I understand it...
I had minor body work after the powdercoating. So I had a few spots that broken into the powdercoating and primer. I used a 2 part product for bodywork.
They also sandblasted the air duct cover and all 4 product shelves included in the $243.00. along with powdercoat and primer.
A normal 2 part product like I used would of melted during another session of powdercoating for red. My powdercoater said there is a a product that is available that can resist the heat of the oven for bodywork. I will call and ask him. I think it was called MetalX??
I did use a about 1.5 quarts of primer, blocked it, wet sanded it, than used a very nice paint sealer. The prep work on that box plus body work is pushin close to 20 hours.
The only regret was using a single stage paint. ( This is before I knew about the site.) The paint is not very hard, and when the box was cut and buffed it broke though the paint. So had to scratch it and paint it again.