Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No Bang for my bucks

I ordered this juicer online after a colleague of mine highly recommended it. She had one and was bringing all sorts of great fruit and vegetable juices to work. So I did due diligence, read all the reviews and decided to make the purchase based on what I thought were good reviews.Unfortunately, it turns out that my juicer doesn't work well at all. It leaves so much chaff after juicing that I have to keep refeeding it. Even when I refeed it like 3-4 times, there's still so much chaff left that doesn't juice. This entire process takes me at least 1 hour to get three 8 ounce bottles. What is the point of juicing if you have to throw away one quarter of the fruit as chaff?