Sure, I recall it being well documented. It makes perfect sense if you think about it. The vendor is assuming the risk by placing merchandise out for public inspection.
Another point in the article - concerning people who have fallen for the "You break it, you've bought it" scam - is that the vendor's loss is not the retail price, but the wholesale cost.
If it ever happens and you're in doubt, call a cop. The cop will tell you both that it is a civil matter, not a criminal matter, and leave.