What Can I Do To Get The Iphone 3g Or 3gs

I got the BlackBerry Storm few days ago and I hate it! So I want to switch to Iphone 3G or Iphone 3GS. But I have to cancel my account, and that costs about $200 at Verizion I think.. What can I do to get the Iphone 3G without having to pay $250 or any other ideas I could do to stop using BlackBerry Storm and switch to Iphone 3G/3GS?