There are definitely two schools of thought on this. In fact, just this past weekend, I was in Home Depot buying a Weber One Touch Gold (love it already) and heard the Grill Department Manager telling another customer, "The trend in grills today is to price some of them low enough that replacement parts become obsolete. Use them until they're worn out and buy a new one." That's kind of the way I see my gas grill. Then again, I've never had a really top-end one either.