I suspect based on a few stories that they don't inspect returns. Semi local buys a stand alone camera thingy to keep an eye on his kids. Package arrives, it is full of gravel. Gets Amazon customer service on the phone, arranges and does a return/replacement. Next one arrives, still some expensive gravel. IIRC, it took 4-5 times before they finally got the camera delivered. Someone figured out a neato scam and was returning unopened boxes for full credit. Or, someone in fulfillment is screwing the system.I did get exactly what I paid for! The only thing I really took away from the experience is that the Amazon inspectors can't be expected to know the difference between "used but still very useable" and "you dummies got taken because you refunded someone's money for the dirty greasy worn out parts they just replaced". That was worth some curious entertainment value, I suppose.