I bought a dog bed and the measurements were off. I bought some iphone accessories. The shipping is great. If amazon is charging shipping I use overstock. I haven't bought major stuff on it. I would say they are no different from any other place and shopping around to get the best price is best. Most of the electronics seem to be refurbished.
Yes several times. I got 400 count sheets for like 9 bucks a sheet.. ( Bought the same before for over 45 dollars a sheet..). You may be limited in color or size etc, but it can be a great value. And their shipping prices are great..