sticker price vs. actual price of college tuition

For a long time, I've noted the difference between sticker price and the actual price paid for college tuition. Prices differ because of financial aid and other forms of "price discrimination" practiced by universities. 

I'm seeing if I can get access to the 2014 NACUBO study, but this link has the 2012 survey results, noting that there is a 45% gap between the sticker price of tuition and actual tuition paid by freshmen.

Of course, it's good to know that, as a parent of college students (to be). But it's certainly important when one is trying to understand what's happening to costs, revenues, and prices at universities.

Two other useful links: a NYT piece and work from a think tank.