You bought a newer edition than I have. As far as I can tell, both products are the same or very nearly identical, save for different coloured boxes. They both have 10 x 30 minute audio lessons & I don't see any disadvantage in choosing the lower priced version. The pimsleur course is basic and best suited to absolute beginners. But considering the scarcity of any materials on this subject, it's a decent way to get your feet wet.