Bruno,
I bought the enamel over steel drip pan, not the griddle, and it works well with the SnS. I may be goofy but I think it helps direct the airflow up through the charcoal better, if that even matters. But anyway, I foil line mine and leave it in the Performer with the SnS most of the time.
Oh, and yes, they do have sales occasionally. That's how I got mine but don't remember what I paid.