Yes, this is the official Sony controller for PS3. I had a bit of trouble finding a new one recently as well, as due to the age of the PS3, some stores like GameStop have stopped selling them new. Best Buy still sells them new however, so I would get one while you can. Nothing is worse than having to buy an old, sticky used controller, believe me.
Sony - DualShock 3 Wireless Controller for PlayStation 3 - Black
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