Apex Jr is more a traditional electronics surplus with components and the the like but also various bits of electronic equipment as well as random weird stuff all surplus stores collect and some prop rental. I could see them operating off of the stuff Apex Surplus gets in bulk lots but is not really suited to their primary trade in props and part of the same business. Unlike Apex Surplus I don't think Apex Jr has ever updated their web design, looks pretty much the same as it was 20 odd years ago.