I think the explanation is pretty obvious if you walk into a retail store. The 360's are drying up, which generally means a new sku change. I know my store sold out of the elites a month ago and haven't gotten replenished, and have had a hard time keeping pro's in stock. Only sku we have kept in stock is the arcade.
I work at a best buy btw. Rest of the district is in the same boat.







