if i have got the Full iPhone app is there a way i can get to put over to the PC version so i don't have to buy it 2 times?
No, there isn't.
@Chelliebell: RichardPayne is correct. 1Password is developed for each individual platform, so it is a separate purchase for each. And in the case of iOS, the App Store is run by Apple, so it wouldn't be possible for us to 'bundle' them all together anyway.
On the plus side, you can purchase just the versions of 1Password that you will actually use (in this case it sounds like iOS and Windows), rather than having to pay for them all together, regardless of whether or not you would benefit from them (Mac or Android, for instance).
Just so you're aware, we are currently running a St. Patrick's Day sale (limited time), so that's a deal for you if you're ready to take the plunge. And if you're on the fence, we always offer a free trial of 1Password for Windows. Just download it and give it a spin. I hope this helps!