That is hard to say with the new official Universal ticketing website...you could head over to Undercover Tourist and pick some up there...probably cheaper, anyway.
Edit: Compared to the end of August single day prices, they are about the same on UT site as they are on Universal...after you include taxes and such.
You can buy them on UT, just make sure you know what season you are going in because there are two different types of tickets. It is listed at UT which dates are which seasons.