I had a networking prof, which allowed us to use a $15 book for our programming, but required a $225 book to cover the 7 layers. He understood the issue, but c

I had a networking prof, which allowed us to use a $15 book for our programming, but required a $225 book to cover the 7 layers. He understood the issue, but could not address all of it realistically. I've had 3-4 1301 classes in which the professors make money off the books/keys. Mostly, after generics, the text book battle seemed to be less exaggerated. There is a trend: 2009-2010 $3100/books 2010-2011 $1500/books 2011-2012 $1000/books 2012 $255/books