Question about Firefly boxset

A lovely family member has offered to buy me the Firefly boxset. *g*

I found it at Amazon.com for 34 bucks, but the description states that it contains 14 epis (including 3 that didn't air), but I'm under the impression that there are 15 episodes.

So does it have 14 or 15 episodes on it?

ETA: Ordered! yay!