$100 off. Best Buy has a iPhone 5s 16GB Verizon, Sprint Sale - iPhone 5c for $99.99, Free Shipping - AT&T is not on sale. 

iPhone 5c AT&T 16GB Black is $1 Free Shipping. $98 less than the Apple Store.

• New 2-year plan required
• Pick AT&T, Verizon, or Sprint
• Choose from Gold, Space Gray, Silver
• Be sure to read: How to find the best Smartphone Plan

Reviews:
CNET gives the Apple iPhone 5s an 8.8 out of 10 rating.

Apple iPhone 5s Specifications:

• 8Mpixel iSight rear camera, 1.2Mpixel front-facing camera
• Apple A7 processor with M7 Motion coprocessor
• Touch ID fingerprint sensor
• Apple iOS 7
• Bluetooth 4.0
• 802.11a/b/g/n/ac Wi-Fi