Walmart offers the Texas Instruments TI-30X IIS 2-Line Scientific Calculator
in Black for $8.88
. Opt for in-store pickup
to avoid the $4.97 shipping fee. That's tied with our mention from a year ago and the lowest total price we could find now by a buck. Approved for use on SAT, ACT, and AP exams, this calculator features basic scientific and trigonometric functions.