Sure, that will work, but most people avoid stealerships..they like to save money, I guarantee you, Rockauto.com will be 1/2 (or less) the stealership price, or Ebay, or any other on-line site of your choice.
Again, why not be sure of your problem? It may be mechanical, or electrical, how do you know it is the actuator? Please share with us your diagnostic findings so you are sure not to waste your time and money.
It may even be the switch...pull out your DVM (digital volt-ohm meter) and see if you get 12v at actuator when switch is locked, then see if voltage reverses when switch is unlocked...
If no voltage...actuator is not the issue... which door is it?