Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great value for money

While it is certainly true that if you are willing to pay more you will get a more comprehensive course, this is exceptional for the price. However I would not recommend basing all of your studies on these CDs for a number of reasons:1. There is to little on reading and writing Russian2. There is an emphasis on learning vocabulary word for word or short phrases and not conversationally based3. There are no grammatical explanationsAs a supplement or refresher this course is superb and I provided you keep these caveats in mind, it is HIGHLY recommended that you buy this course!