Apple iphone from apple used only for att but can i have it unlocked?

Ok so apple sells the iphones on the website for the different carriers and they also sell them unlocked but the unlocked ones are 500 and the ones fot the individual carriers are 99. Can i just buy one thats 99 and have some one unlock it? Hackers i know you know the answer lol

Factory unlock

No.
Buy it unlocked.