That is probably the case for a majority of their "new" items, but sometimes, they do have the best price.
If we're talking used games, they run the best deals by far, at least in my area (Central Ohio). No other big box or mom & pop store has the volume of used games, or sells them B2G2 Free or 4 for $XX. I clean up at GS during those sales. The B2G2 Free sale around Christmas was bonkers, since it included current gen.