I love Amazon and having Prime. I order all kinds of items from them, and don't need to worry about shipping prices then. And if there ever is a problem, their customer service is the best around in my experience.
Also a nice quirk lately is that when I order stuff on Thursdays, they ship it out by overnight delivery so it arrives on Friday.
"The good thing about science is that it's true whether or not you believe in it." - Neil deGrasse Tyson