This deal has ended.
OfficeDepot.com has the TI-83 Plus Graphing Calculator for $54.99 after this $25 rebate and this $20 off $100 coupon through 8/31 (you need to add $0.01 more like these $0.59 clips to get the order over $100). The TI-84 Plus is $75 (silver, pink or orange is $95) after the rebate and coupon. Plus, delivery is free. This sure beats the school store!