Igor Baksht made a big Christmas purchase from a Colorado Walmart last Friday — a PlayStation 4 bundle for his 13-year-old niece. But as he was about to wrap the box, Baksht opened it to be certain “everything was inside, that all the contents were inside, all the games were inside,” he told KMGH-TV. Then he got a shock: “When I opened it, I said, ‘Oh my God.’” Instead of a PlayStation 4, the box contained two plastic bags full of rocks, Baksht said. The Stapleton Walmart where he’d made the purchase had closed, so Baksht tried a 24-hour one — but staff...