Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Worth half the price

I bought this and the extender. The air deflector itself might work ok on a small vent, but it is VERY cheap plastic. The magnet didn't stick on my vent, partly because it's small and cheap, and partly because my vent is painted. But don't even think about using the extender. The only way to get it to stay together would be to glue it. Did I mention CHEAP?I would give the deflector by itself 1 star, maybe stretch to 2. Add the extender and it goes to -5. After two minutes of trying to get the whole thing to stay together and stick to the vent, I just tossed it all in the trash. Wasn't even worth paying postage to return it.Trouble is, I can't find any quality substitutes. Oh, and did I mention that it's CHEAP? Should sell for about a buck. If this is the "Deluxe" deflector, I wonder what the standard deflector is made of.