Radio Shack today detailed an extremely rare sale on iPhones. The retailer is expected to cut $50 off the prices of all new iPhones and should sell an iPhone 3GS for as little as $50, scaling up to $250 for a 32GB iPhone 4. Customers will also have the option of trading in a working iPhone 3G or 3GS for a $75 or $125 credit when upgrading to an iPhone 4, dropping the price to as little as $25 for a 16GB iPhone 4 and $125 for a 32GB model.
