Both Target and Radio Shack are preparing to drop their prices on iPhone 4 and iPhone 3GS units, according to a pair of new reports. Citing a pair of “tipsters,” Engadget reports that Radio Shack is dropping its prices on the 16GB and 32GB iPhone 4 to $169.99 and $269.99, respectively, while pricing on the iPhone 3GS is said to fall to $19.99; all three offers would require a two-year contract. Phone Arena is reporting that Target stores…
