rest hand for driver door for Tahoe 2012
 

I have a Tahoe 2012 car, the interior trim of the driver's door is almost broken, and then I went to the car dealership for Chevrolet, the seller said that I should buy all the interior door, but I do not need a padlock that helps shut the door.
Can I buy this piece only? How much does it cost?
I am in Kuwait