Make sure that the seller for each is Amazon, not a third party. First, add the camera to your cart:
Canon EOS Rebel T1i 15.1 MP CMOS Digital SLR Camera with 3-Inch LCD and EF-S 18-55mm f/3.5-5.6 IS Lens
Next, add the lens:
Canon EF-S 55-250mm f/4.0-5.6 IS Telephoto Zoom Lens for Canon Digital SLR Cameras
Once you get to checkout, the price drops by $200 to $782.53. This price is confirmed current as of December 7. If you already own a Canon camera, you might qualify for this rebate, which takes the price down another $50.