Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Grossly Overpriced

I purchased the Presto PowerCup Concentrators for my Microwave Popper because I can no longer find them at the store. Since I saw that Amazon carried the and I had an account with them, I bought what I thought was a multi-pack becasue of the price. When the product arrived, I was a amazed to discover that what I thought was two orf three packs was only one.I returned the product and got them at the manufacturer, where I was charged a third of Amazon's price.Buyer Beware