Number of the Beast

I was looking at the textbooks I will need next semester. I only need four books, but unfortunately each of them has a pretty hefty price tag. I added up all the listed prices, and the total came to $666.
I think there are a few different ways I can interpret this.
1. The textbook industry is of the devil.
2. The BYU Bookstore is of the devil.
3. My textbooks are of the devil.
This would be more distressing if I hadn't recently learned that Satan is a good role model.