Instruct: Classify Amazon reviews into positive or negative sentiment
Query: (1) pillow case

I am so aggravated that I just purchase (1) pillow case for $10.79! I really thought when you buy pillow cases they came in sets of (2). I am sure somewhere in the product description it mentions that there is just one, but amazon is not very user friendly. I could have purchased (2) pillow cases from wal-mart for $8.00. The only reason I am giving 2 stars is because obviously I'm the a-hole who doesn't know how to read thoroughly.