Agreed. It's the same thing with the way they sell laptops or phones. Why leave dumb units lying around? Why would anyone ever buy a device that they haven't tried? Best Buy (as well as other stores) need to have well-functioning devices turned on and available for customers to try.
Additionally, they need their employees to go around and reset the devices to ensure a proper functioning system instead of the ones bogged down by apps/content downloaded by random kids onto the device.
Even going to Best Buy to try a unit does next to nothing. Pretty much everything that they sell has a flat battery, is stuck on a screen or suffering some other issue.
Except of course for the Apple display. All working. All looking good. All the time.
Additionally, they need their employees to go around and reset the devices to ensure a proper functioning system instead of the ones bogged down by apps/content downloaded by random kids onto the device.