Apple has begun offering the iPhone 5 unlocked in the US via its website, where it is priced upwards of $649.

The three different versions of the phone — which offer 16GB, 32Gb and 64GB of storage — are available to buy for $649, $749 and $849, respectively, for those for prefer to go off contract and have money to spend.

9to5Mac reports that Apple’s physical retail store could begin selling the latest device unlocked from tomorrow. The blog says that its sources indicate that the devices have begun arriving “in large quantities” at various Apple stores this week in preparation.

unlocked 520x255 Apple begins selling unlocked iPhone 5 in the US, starting at $649

The unlocked version of the phone is GSM only. That will support the AT&T and T-Mobile networks in the US and overseas operators too, making it a better choice than a CDMA phone for those that regularly travel internationally.

Unlocked devices currently have a one week shipping estimate, purchases are limited to two devices per customer.

The larger device has been a hit with customer and Apple sold racked up 2 million orders within 24 hours of opening pre-orders, going on to sell 5 million units in its first weekend of sales.

Headline image via achimh / Flickr