the TVs at my local Walmart are attached to each other.

the TVs on the shelves at my local Walmart are attached to each other with wired alarms. Just how are you supposed to buy a TV if you can’t get it off the shelf?

They have boxes in the back. All of those on the stands are for display only.

Sometimes, you have to take a slip of paper with a UPC on it to the register, and they bring it out from the back for certain items (usually oversized things like furniture, etc.).