It's good news for them that the box was empty instead of filled with sand - that way the weight in the USPS shipping data made it obvious they weren't shipped

It's good news for them that the box was empty instead of filled with sand - that way the weight in the USPS shipping data made it obvious they weren't shipped the camera. I wonder if this was a Fulfilled By Amazon purchase or whether Amazon directly bought this empty box from a wholesaler to stock in their warehouse?