Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
This is one of the worst one i ever bought. The price is kind of high so i expected it to have some use. There is no vibrating motion beside the rabbit head. Since this product can not be return, I used it once and went righ in the trash.
Answer:
Negative