Unabridged version of Joy Luck Club

I want to download "The Joy Luck Club" by Amy Tan for my daughter and see that there are two versions available. The Unabridged is $15, and what may be a shorter version is $10--its not referred to as "abridged" in the description. The two versions came out in different years, but each lists the same run time of 9hrs. 6 minutes. How do you find out what the difference would be between the two versions?

Thanks