Motorola V551 / V330 / V547 / V555 / V557

I want to buy this phone unlocked and then insert my companies sim card in it. Can any1 tell me how long i may have to wait before the phone is available like that and also how much i'm looking at. Also i am open to any suggestions beacuse i am not living in the us at the mo but i want the phone so wat is the best and cheapest way to get it so i can just put in my current sim card?
Thanx