Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unbelievable !

For those who say the product is overpriced...who knows what they paid for it? I paid $34.99 at Petsmart and felt that it was well worth the money. The cost on Amazon makes it a great deal. You can spend $15.00 on a brush that does next to nothing. I took it out of the package and began to groom my cat immediately (medium long coat). He LOVED it. He was rolling on his back and laying side to side so I could comb him all over. He never did this with the regular comb. I could make a sweater out of the fur it removed using it the first time and it's not even shedding season yet! Just the effort in vacuuming and elimiating hairballs for the cat makes it well worth the cost. It's funny how those who complain about the cost don't mention any benefit to their poor kitty! You just can't satisfy some people...