Aha. Are they shiny stainless? What's he charging? His grates and flavorizer bars, by the way, are indestructable. I've had them running on my NG 2000 for a couple years now and they are just incredible, the grates clean perfectly with the char-gon (I think it's called that) cleaning device, which is just a metal "u" at the end of a handle and it scrapes the residues off without using a brush. As it happens, I have two sets of flavorizer bars (and burner tubes haha) one of which is RC. One set of RC grates, but one set is all you'll ever, ever need. Easily they will outlast both the grill and me.
Chuck, sorry to go all over the place! You might be interested in looking into the Char-Gon cleaning device for the grates so you don't need a brush. This way you eliminate the small odds of getting a metal grill brush tine in your food. Also, if you have the shallow and deep box grills you could always do the toast test side by side. You get a loaf of bread and cover the grates with it to see how evenly the grill heats judging by the ... toastiness of the toast. I'd heat the grill up first. Personally, I tend to keep the rear burner hotter than the front and keep the middle one in the middle, this way medium well is in the back and rare is up front. After the toast test, you can feed local birds if you're into that sort of thing. Or have a lot of sandwiches. Your choice!