I seriously bought it and it’s only allowing me to see the first chapter! Wth!!!

This book is ABSOLUTELY worth the “splurge” of $7. Yes it’s free somewhere else but you get a way better learning experience than just a simple pdf. This version is interactive with embedded quizzes and ways to help you digest the information rather than haphazardly read it without really understanding it.

Why you selling this book. Its free

I can’t belive these people. This book is so much better than the PDF. Plus it is formatted so much better and much more appealing than the free PDF. I think it’s worth the $7.

A waste of money. Greedy for a couple of bucks. Free literally everywhere else.

Openstax is about free open source knowledge and only ask for a donation, why would I pay for free?

you dont have to pay for it you could just download the pdf ! :)

I have the book downloaded for FREE on a .pdf and in my nook, why does it want to charge me $6.99 for it here?

I love the book!

You can find this book for FREE online at the publisher website, openstax.org, so I am appalled that it is nearly $5 USD here.