Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Knock off Ray Bans at an unbeatable price

Do they look like Ray Bans? Ish. Are they comfortable? Ish. Are the affordable? Yes! It's nice having the "Ray Bans" look without having to pay the Ray Bans price. I never have to worry that these will get scratched or broken because if they are, I can just get new ones for practically nothing.