Instruct: Classify Amazon reviews into positive or negative sentiment
Query: you need this

I bought a food proccessor and additional blades. The blades are very sharp and awkward to store, as they do not stack. The holder is well designed and takes care of the problem. I do think a holder should have been provided by the manufacturer with the purchase. It just seems so logical, which leads me to believe it is another way to pick up some revenue or else keep the price down.