Amazon and Ebay are sort of different; Ebay is an auction website, but they have just about everything on there. Amazon is a website that has just about everything (even cereal! My dad bought some) but it's all one set price. I really like Amazon because they deliver small stuff (like books) really fast, so that's usually where I get my books :)
Those are the only 2 that I shop at that are the same. I don't think there are any others like that, that you ca bid on or buy from out of countries... Or at least nothing as big as Ebay or amazon, and those I prob wudnt trust then if you havent heard of them.
Craigslist is different, you actually have to go out and meet the people and pay with cash.
I think craigslist is like that.
I know what they are lmao.