Rebound Records - This is the place I would personally go with. Their shit is cheap. The guy who runs it is nice. They also have a ton of cheap emo. You get free stuff with your order as well.
Lumberjack Distribution - This place is quite larger. The service is good and fast, but not always the cheapest.
Fueled By Ramen Records - Ann Beretta's label. They should have it. And this is a quite cheap label. Their mailorder is quite fast as well.
CDnow - They have it, but it is so fucking expensive...
Amazon.com - They have it, but it's expenisve as well. Buy some books from here though. They're quite cheap. They have Catcher In The Rye for about 5 bucks. Definetely a good buy. They also have 1984 for about 5 bucks. You can't possibly live without those two books, so get off of your ass and buy them.
musicblvd.com - They have it as well, but it's still too fucking expensive.
Rotz Records - It's expensive here as well, but atleast this place is some-what indie.