I recently got an email from the professor and we have the options of two packages, the first being the textbook & Mastering Biology program combo at $107.15 at the bookstore and the second option just being the Mastering Biology program (with ebook of the textbook) at $63.60. He makes it seem that these options are the only/cheapest options there are, and I was wondering if any other students who previously took Bio Sci 93 knew of any other options, or if I should just go with one of the ones offered.