In a rather surprising move, Apple's begun selling an unlocked GSM iPhone 4 in its U.S. online store -- independent of carrier contracts. Available in both black and white, the unsubsidized iPhones are priced at $649 for 16GB and $749 for 32GB ($450 pricier than the AT&T and Verizon versions). Free shipping is included, estimated delivery is 1-3 business days for black and 3-5 business days for white models. The main attraction of an official unlocked iPhone: You don't have to commit to an expensive two-year plan. That's especially appealing to those who can barely use the bundled minutes, texts and data. With today's extensive Wi-Fi coverage, a pay-as-you-go plan could save more than $1,000 in the two-year period. Frequent travelers should also appreciate the fact that they can simply purchase a local SIM card and save good money on roaming fees. Carriers aren't gonna like it, but Apple couldn't care less, as shown when it introduced iMessage without their prior knowledge. Source: AppleInsider