C Spire Wireless is now selling the iPhone 4S for $50 offer standard retail. The discount, which is only available when signing up for a new two-year agreement, brings the price for the 16GB iPhone 4S to just $150; 32GB and 64GB models are selling for $250 and $350, respectively. In addition, the carrier is offering $25 off the 8GB iPhone 4, bringing the price for that model to $75. C Spire launched the iPhone 4S on its network last November. [via…
