This is a great question that’s asked all the time.
But there is a problem with the assumptions where that question comes from. Many think that buying a website is the same as when you go to a brick and mortar store to buy something off-the-shelf. Where you can get “one of them” anywhere and shop around for a better price because they’re all the same right? Some may think that to buy an “off-the-shelf” manufactured item (one of thousands of identical items) the price is pretty competitive and fairly fixed.