hi, i dont work there, its part of my fathers engineering company, i'll ask and try and get the details for you. Certain powdercoat cost more than others, but if ur after say black then thats a cheaper option. Stripping can take a little while, if it needs to be done. The nature of powder tho, means that any blemishes should fill up anyhow. powder coating itself would take say 10 mins to apply, then 30 mins in the ovens. (warm up, bake, cool down)
like i say i'll get back to you....
Chris