Whatever S&W means by tuned action you have to remember that as a seller of firearms in the State of Massachusetts they have to comply with state law. Maybe in 2015 it's different but around a dozen years ago or so I sent my then relatively new CS-45 to the PC for their "action job". Memory says it cost me $87.00 at the time.
When the gun came back it had a smooth trigger but it had a ten pound trigger pull. I called the PC and they told me they had to comply with state law and that was as light as they were permitted to make it. I was irritated but knew there was little to be done and I wasn't inclined to argue so I thanked them and hung up.
I proceeded to take that puppy to my local gunsmith, told him the problem, and for about the same price, so I paid double, sadly, I had a very smooth trigger, MUCH lighter in double action, but not too light. How light? I cannot recall. Perfect for me - probably 5 or 6 pounds in double action. Definitely way below 10!