consoles are sold at a loss, best information i can dig up is that this is still true today, even after all the volume.
Inventory of other locations, and the individual details of a stocked item were one of the functions. This additionally displayed the markup/profit percentage for a given item. I understand that these numbers may not have been completely accurate, but will be sufficient for demo purposes.
Most toys, movies, and video game titles claimed a ~20-30% margin. Private label clothes and such, slightly higher. Game consoles showed ~1-2%. When employee discounts were finally adopted, it maxed at 10%, and thusly items like game consoles were excluded.