Right now at Walmart, you can get the Texas Instruments TI-30X IIS Scientific Calculator for only $8.88 after a price drop from $12.97. You save 32% off the retail price for this scientific calculator. Add extra for shipping or receive free shipping when you spend $35+. This is the lowest price we could find online by about $2. The Texas Instruments TI-30X IIS Scientific Calculator is ideal for general math, algebra 1 and 2, geometry, trigonometry, statistics and science. Sales tax is charged in most states. Deal expires soon.