The iPhone 4 sells for $200 with new AT&T contract. You see sale offers as low as $0 on the hottest Android phones, but sale on an iPhone are rare. Today RadioShack launched a hot sale offering the 16GB iPhone 4 for only $149.99 with new contract. The 32GB iPhone 4 is on sale for $249.99. The previous iPhone, the iPhone 3GS is only $49.99 with new contract. You save $50 on each of the available iPhone.
But that is not all. RadioShack offers attractive Trade-in credits for iPhone 3G and 3GS. You get $75 credit for the iPhone 3G and $125 for the iPhone 3GS. So for instance you own an iPhone 3GS and trade it in you only pay $24 at the end for your new iPhone 4.
To be eligible for the iPhone trade-ins, the phone must power on, cannot be PIN locked and must be in fully functional, working condition without any broken components, including, but not limited to, cracked or broken display. In addition, the cell phone housing or casing cannot be cracked or broken, and neither the display nor the housing can exhibit any signs of liquid damage. More details on the RadioShack Phone trade-in program can be found here.