That video was staged, at Target electronics need to be paid for in the electronics department where there is no self-check out. In addition Target has the best Loss Prevention in the business, including let shoplifters continue until they accumulate enough goods that their crime is a felony.

Every self checkout around here has an employee staffing ~6 terminals. They're supposed to be watching for things like that. Usually theyre just staring vacantly into space, which I get, that job pays nothing and provides 0 mental stimulation.

When you see a TV being purchased, though, it wouldn't be hard to just watch that it in fact got checked in as such.