Nokia 6555

So I have the AT&T version, but I would like to unlock it. I don't, however, want to pay the $60 some sites seem to charge for it.

I understand that BB5 phones like the 6555 can not be unlocked via some downloaded software, but that the unlock code must be obtained from the manufacturer or provider.

Is there a way for me to receive an unlock code from Nokia or AT&T without them charging me an arm and a leg for it?

Thanks in advance for any insight you may be able to provide.