Amazon has a Texas Instruments TI-89 Titanium Graphing Calculator for $134.99 with Free Shipping.
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- All of the features of the popular TI-89, plus extras n
- 188 KB RAM, 2.7 MB Flash ROM, 16 programmed applications n
- 100 x 160 pixel display with split-screen views n
- USB and I/O ports; includes USB and TI cables n
- Approved for AP, PSAT/NMSQT, and SAT exams