Instruct: Classify Amazon reviews into positive or negative sentiment
Query: extremely disappointed

I bought this in good faith thinking that the $30 CD was a complete package with instructions as part of the CD. I open the CD and find out that I have to spend another $23 to buy the book to understand the lessons on the CD. And since the CD is opened, I cannot return it. The description of the product is incomplete and misleading. I had no intentions of spending upwards of $60 and would have chosen a complete package for less money.