I have bought many knives from Amazon and it showed up USED, sharpened and some were down right abused. Of course I returned them the same day after receiving. Amazon initiated a ban for my account because I had too many returns, thankfully an Amazon customer service rep send me an email about the ban and I informed him of the issue of Amazon selling used knives as new. I received a standard reply saying they only sell new items and the ban was retracted.
For those you don't know, a ban from Amazon is for life and you can never open an new account with them under a different email and physical address, they will figure out its you and ban your accounts.
Long story short, in the past year I have noticed prices on Amazon for everything have gone up ALOT and it's become standard pratice for Amazon to repackage returned goods to sell as NEW. I have purchased quit a few baby items for my son that showed up in original packaging but had signs of usage. One high chair I bought even had baby puke aka regurgitate baby food stuck on he seat when I opened it and assembled it. It was too much hassle to take it apart and package it for a return so I decided to clean it with alcohol and kept it.