Generally talking, if you want to buy a ps3 you are going to have to put in a great deal of time. Your best wager may be to get on a listing that books a ps3 for you when a shop finally takes shipment.
If you are prepared to spend the money and also placed the time right into finding one, you can purchase a ps3. If you believe that this is going to be an easy job you are sadly mistaken. You might have to stand in line for hrs on end, or offer in and also pay a couple of hundred dollars additional online.