I've seen and handled the Diamond 4850 Skull box in Fry's.... almost all of them were extremely thin boxes and felt mostly hollow, despite being fairly small already.
They had just put them on the shelf next to Visentek 4850's, and to keep people out of them they used straps on them. Every single box was badly mangled and looked smushed because of the straps, the cardboard was just that thin. Diamond's stuff was all looks and no protection for the cards inside, even Visentek had stronger boxes!