unlock sprint iphone 4S

hey
i search to unlock my iphone 4S ,
sprint carrier locked.
can someone help me please ?
ill pay if need some ,
i search for some site ,
i can open at&t for 2$ but i dont need it ,
btw if someone get some method to cheap unlock for all carriers , add me , we can make business.

UP

It is not possible.

i heard about Turbo sim , what is thaT ? its like simfree ? or what ?

If you're on a working jailbreak it's probably possible to unlock it the same way I unlocked my one. ;)

And nope I doubt a Turbo SIM would work for newer basebands as well.