Given the task definition and input, reply with output. Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

Good product. The battery lasts and works well. They are a good value for the price when you consider what you'd pay in store - these were purchased as gifts to replace older models.
Good Review