Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bladed dulled after 10 uses

Priced seemed too good to be true.I bought this device specifically to make smoothies from frozen bananas (I tend not to eat them fast enough and then freeze them when they start to go bad).The first few smoothies I made were great and required very little effort to blend the bananas, some milk, and berries into a smoothie.After a while I noticed it took a little more effort to blend the fruit.I probably just hit my 10th smoothie today and had to use significant force to blend the fruit.After washing the lower unit I check the blade for sharpness - it was extremely dull! No wonder it now took so much effort to make my smoothies!The blade is not serviceable. It looks like one would have to replace the entire lower unit.Sheesh! What a piece of crap. Well, you know what they say, if it's too good to be true...