Which online buying/preordering website is better?

Amazon: Is a cheap, unorganized website that offers many cheap things other then games and consoles. Its unorganization makes it hard to browse the website and without some sort of membership or so you have to pay for shipping.

Gamestop: Cheap (same prices as Amazon with games) website, very organised and FREE shipping when you pay over $25. So when you want to buy a game, console or controller which is usually over $25, then you get free shipping!

BTW, does gamestop ship to Australia?