Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Example: I've read this book with much expectation, it was very boring all through out the book
Example solution: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Problem: My son loves Yu-Gi-Oh. He can't wait to receive this for Christmas. $30.00 does seem like a lot of money for this, but the plain Yu-Gi-Oh figures are $20.00 a pack. Besides, this is the "cool dragon" (as my son calls it) from the movie so it is worth it to see him get so exited when he opens this. Note: I was in a Toys R Us store today and these same dragons were priced on clearance at $14.99.
Solution: Positive