Summary: I had this exact model calculator at work when after a few yrs it died. I shopped around and could not beat the price for this used one. When I received the calculator it was like new !! Very happy that I got it and saved a ton of money in the process.
Summary: I got this calculator about 11 years ago now and it has only barely stopped working. It got me through Jr. High, high school, and most of college. It was always easier and more intuitive to use than the TI calculators everyone else had,and so I'm thrilled to have found it available on Amazon. Will be ordering one asap. Love this product!
Summary: i am an amazon prime member for two years now and probably purchase 150 or so products from amazon each year. in all that time i only wrote two bad reviews: one was for a dinky $2 product that arrived cracked and the manufacturer replaced it immediately, no questions asked. this is the second time - i ordered this $10.00 calculator just to have something extra to use around the house (besides my phone or computer).
Summary: The HP 30S Business/Scientific Calculator is a reliable math tool for anyone student, professional, engineer, or just to help balance the checkbook. I purchased mine for figuring my income tax & for math on paying my bills on my checking accounts. The HP Calculator is easy to use, very accurate, & has excellent quality.
Summary: This cheap calculator is my beloved. All my classmates in high school had Casios, and I could never understand why! This calculator is so simple to use, has quite an array of useful and extra capabilities, and I never even needed to read the manual! Mine is still alive and kicking after more than 7 years.
Summary: For the price ($17 in our university bookstore), this is a superb calculator that offers both a quadratic and a simultaneous equation solver. Since it is not RPN, the HP fanboys will hate it, but it does offer a lot of features in a small package and is a great competitor to the TI 30X series. The only one I might suggest over this is the Sharp EL-506W, which offers solvers and integrals for about the same price.