Best prices on Graphing calculator cases in Calculators. Check out BizRate for great deals on Calculators from Texas Instruments, Casio and Sentry. Use BizRate's latest online shopping features to compare prices for Graphing calculator cases. Read product specifications, calculate tax and shipping charges, sort your results, and buy Office Supplies with confidence. Easily narrow your search and find the product that's perfect for you: Casio FX-115MS Scientific Calculator - Casio FX-9750GII Graphing Calculator - FX-9750GII-L-IH.