Looks like you can now begin unlocking iPhones at your earliest convenience. Engadget claims that iPhoneSIMfree's software is now available for purchase online from four online retailers.Here is a look at iPhoneSIMfree's commercial launch:

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Wireless Imports in the US, iPhoneWorldwideUnlock in Australia, 1digitalphone in Germany, and iPhone4arab in Saudi Arabia (currently down) have all purchased bulk licenses from the iPhoneSIMfree team and are selling individual unlocks for around $100 (Update: that price is just from the US etailer, it seems; looks like the Aussies are letting it go for under 50 bucks American. Also, the hackintosh community is already busy at work trying to snatch these sites' code as we speak).

How long do you think it will take until users start distributing iPhoneSIMfree's code across the Web? And how many of you have actually tried this unlock tool yet? Please, let us know.