Instruct: Classify an Amazon review as either positive or negative.
Query: Works well but I have to agree, it is too expensive

It is crazy expensive for the size. Even though it works great, I don't know that I could keep up this expensive habit. I will be looking for another shampoo that can do the same that is more afordable. They would probably get more sales and make more overall, if they brought the price down by half.