I have never seen this before - the price is both 59.99 and 47.99. What's going on?
The first one is the name of the bundle that includes the second one. It's very normal and common.
This is actually a little strange. On the main product page for the book alone, there is a note that states "This product comes with a study guide included," but it is not listed separately under resources. The price is $59.99 for the standalone book plus the study guide.
I'm wondering if the single resource which includes the study guide is actually $47.99 for the text and $12.00 for the study guide in the internal figuring, and in this collection, they put the price of the study guide to $0 since it is listed separately.
I have the collection, and the study guide is a regular resource with several pages.
I've updated the page to reflect the proper pricing.
Thanks Mitch!