Someone used this to defraud (?) Amazon by ordering asphalt, using it to fix potholes, and then shipping back sand:
Amazon is just full of junk, the 2-day shipping too often becomes 3-4 for me, and general concerns about the health and safety of products on there (I have no idea how people trust them enough to buy things like toothpaste or other stuff that goes in your body)
Home Depot has sold me a returned product that was missing parts before.
You want to save money by making customers do the checkout labor for you, you're going to lose some money on goods.
It's way worse for clothing items, but what else are you going to do? You steam it, bag it and put it back into stock as new.
I received an item recently that was actually just a bunch of hardware pieces [0] in one of the return bags you use at Whole Foods when you do a return there. Very clearly not the original packaging. It looked fine so I didn't fuss. But when I went to install the thing, I noticed about 1/3 of the pieces were missing. I returned it and ordered another one thinking surely it wouldn't happen again; I really liked the product but needed all the parts. The next order came before I even made the return and it was clearly in a box and labeled as the original manufacturer intended. They obviously resale returned items without even inspecting them at all.
I now won't buy anything from them besides the junk that's hard to find else where because of this. I've learned to inspect everything immediately because the return window might lapse before I intend on using the product. The thing I mentioned above I sat on for about 28 of 30 days of the return window before I went to install it and noticed I was short a lot of parts. It created some logistical headaches because I would have really liked to install it the day I tried to ... had some guests coming in town, had a nice weather day to do the work, etc. then had to scramble to find time to do it when the replacement came and my guests were at my house I installed it while my wife entertained them... stuff like that
[0] The nature of the item being a kit of several dozen nuts and bolts to hang something outside.