APU also offers some scholarships for undergraduates.
I was offered a 100% tuition waiver when I applied during my senior year of high school, but unfortunately I didn't have the funds for living expenses and such, so I had to turn it down.
Personally I'm glad it worked out as it did, because I wound up getting into a field of study that I wouldn't have been able to at APU, but nonetheless that would have been an interesting place to go!