Agreed. If I see a grouping of things together (except for a set of generic box cars), I won't even consider it. Why pay even $1.00 for something you don't want? It also creates the impression that the Seller is trying to either "upsell" you, or dump unsellable or unpopular items on you.
I think the majority of folks want to creatively invent their own groupings on their layout.
Mannyrock