We have two TI - 89 graphing calculator for sale. Both have manual and unit-to-unit link cable and we will include brand new batteries with them. They are a few years old but were used for a semester or two and now are just sitting on our shelf. They work great and will come handy for anybody taking calculus or engineering classes. Walmart sells the new model for $170 plus... We will asking $90 each. Please email privately if you are interested.