I recently bought a hitch shackle from Amazon Warehouse, what came was not a hitch shackle so I needed to return it. It was easiest to drop it off at an authorized Amazon return center. The closest one is a UPS store. I went in there and had a problem bringing up the return authorization and it took awhile to get that fixed on my cell phone. While I was waiting to get a reset, I noticed that most of the people walking in the door were doing Amazon returns. One of the workers confirmed that that was more than half their business. Quite the business model