It does what it's supposed to do. Before I started my fall semester at my local college, I needed a scientific calculator for my stats class. I went to my local Rite Aid and they were selling them for $99 a piece. When I looked on Amazon, they were $10.96 (at the time of purchase). Why would I pass up such a savings? I'm a college student, on a limited budget, I can't just throw away money when I need that money for basic essentials (like food, transportation costs, books, etc.).