Sure, you can now purchase an unlocked iPhone 4S within the US officially, but folks in the outlying territory of Puerto Rico have some tempting options if they'll go the long-term contractual route. The region's division of carrier, Claro, is now selling the Siri-packed device starting at the low, low price of $99 for the 16GB model on-contract -- those scared of commitment can also snag it unlocked, albeit for a slightly pricey $670 (which as 9to5Mac points out, is up $20
