With roots in online book sales, Amazon has grown into a one-stop shop for almost anything you could possibly desire. Amazon has products ranging from apparel & accessories to computers and office products, for cheaper prices than at most stores. Consumers can buy products from Amazon's warehouse or look for used and new products from other vendors. Orders over $25 directly from Amazon qualify for free shipping.
If you would rather put in a bit of a fight for an rare VHS or old movie poster, check out Amazon.com Auctions. Selling items is also easy - put them up on the auctions site or list them as one of the used items in the other sections.