I was in the library the other day and saw someone using the same intro calc book I was using in undergradMost math books the sympathetic professors required of us were 20+ years old and were found cheap on Amazon.
Disgusting though the College Algebra/Trig and remedial math books are done every year with a few new problems. Then the online key code for the students to do homework with cost another 50+.
I almost had to salute the kid