Instruct: Classify the given review into positive or negative sentiment.
Query: worth every penny

This product is a life changer. My fiance, used it for 3 months and lost 50 pounds. I used this product, after I had my baby, and lost 30 pounds in believe me about a month and a half. the pounds shed off me, and when I retured to work from maternity leave, people hardly recognized me, and wanted to buy it from me too. It works.