Blackberry 9700 swap for Iphone 3GS! ?

I have a blackberry 9700 bold for sale 100 or swap for iphone 3gs my phone is on any network solid condition just has a minor dent at the botton and the rest is perfect only get the handset and charger. If you have an iphone 3gs and want to swap it must NOT be jailbroken and it must be on o2 or factory unlocked. Thanks!