If you stay at Universal property, you get the fast pass for free.
Wow, that was not the case when we were there; but I got a huge discount for a 3-Day pass for ~$150, so that probably meant that I was ineligible for the FastPass. But, considering everything, the ~$90 we paid per day for the pass, it was money well spent. My wife was looking online, and they say that they include 'x' passes with some of the resorts. Universal might not have the polish on the rides that Disney is noted for; but bang for the buck - it's not even close.