How long does it take ordering from the website?

I'm in the US.

I ordered from their website on the 6th, it said items usually arrive in 4-7 days. It's the 10th, hasn't even shipped yet, and the email I got says the 14th-17th.

Which is cool, because my birthday is in that range, but damn! LOL

Why would it say 4-7 days on the website and then take almost twice that long?