I don't know why Amazon has a "lowest price" reputation on HN. Everything on Amazon is overpriced. The only reason why I still use it is that people give me Amazon gift cards instead of cash. I use geizhals.de to find products and Amazon is rarely shown as the cheapest seller. The price difference isn't insignificant. Depending on the product you can expect to pay 15% more on Amazon and that's what I tell people giving me those amazon cards.