2003 Dodge Neon

My son just bought a 2003 Dodge Neon with no power options (windows or locks). He does not have a remote entry key - it’s old time put the key in the door and turn! The driver’s side lock, however, does not work with the key. This is clearly a pain in his @#$%. Is this an expensive repair? Thanks.

Not really. See a good locksmith and explain the problem.