drivers automatic door lock stopped working

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Hey guys from what ive found from research it looks like my drivers side door lock actuator is toast. this is in a 03 X5 4.4

syptoms: all other doors automatically lock and unlock with remote, all other doors automatically lock when i hit 8mph. all other doors lock and unlock when i hit the button on the center console. only way to lock and unlock the driver door is with the key in the door lock or by pushing down on the lock its self or pulling on the interior handle to unlock it.

is there anything that i can do to fix this unit? i just want to make sure there's no options before i shell out the 200$ to replace it. and also if someone knows cheaper place to purchase the replacement that would be also nice to know!!