Both devices will go on sale in stores September 20, and you can pre-order the iPhone 5C beginning on Friday, September 13.
The 5C will cost $99 for the 16GB model, and $199 for the 32GB model. Both require a two-year contract.
The 5S will cost $199 for the 16GB model, $299 for the 32GB model, and $399 for 64GB. They also require a two-year contract.
With this announcement, the 4S will now be free with a 2-year contract.
The iPhone 5 wil be phased out altogether.
You can follow Business Insider's live-blog of the Apple event here.