A good part of the stuff sold as "used" on Amzon (though not all of it) never actually has been used.
A few of the major sources:
Items that were shipped to retailers and not sold, rather returned when the retailer went under or found itself with overstock.
Items whose packaging was damaged in shipment but the product inside checked out as undamaged and had to be repacked.
Older models returned to the manufacturer when a new model was released.
When I need a new printer or tablet or such FOR A PARTICULAR PURPOSE I always shop the "used" with an eye out for a product, perhaps not up to that day's "latest and greatest" but whose performance meets or exceed the particular purpose. My saving on printers, for example, is about 40%. On printers, I don't use Amazon as I get better pricing from Canon directly.
