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How often do you see someone using a stand-alone pocket-sized calculator these days? Unless you work with engineers, economists or mathematicians, spotting one is akin to seeing a unicorn. But, as it turns out, there is a market for calculators, especially graphing calculators — which are required, for instance, for some math classes in high school and college.
Before you toss your old calculator, check CalculatorSource to determine its value and popularity.