Following in the footsteps of its retail partners, Apple has officially dropped the price on the 8GB iPhone 3GS, while a new report suggests the company its dropping its standard restocking fee. The 8GB iPhone 3GS is now available for $49 directly from Apple with a two-year contract; the move was widely expected, as retailers such as AT&T, Radio Shack, and Best Buy were already offering a similar discount on the device. In addition, 9 to 5 Mac…