I'm going to need to read over your last two threads to make an informed recommendation (because the amount of information is visually overwhelming me at the moment) but I doubt you need to buy anything to make the shifter work again - as a shifter.

If you are planning to do the work to replace the shifter assembly, just hack out the shift-lock solenoid so you never have that problem again. It sounds like the NSS you have needs to be adjusted or cleaned, but that is possible without buying anything new.

The shifter assembly is over-complicated in the late cars. All it really needs to do to work is have a rod connected to the linkage below the car. However, the engineers (and I don't fault them) added safety features like the positive detent locking mechanism to keep the shifter from getting knocked between gears while driving, the solenoid to ensure you have your foot on the brake before shifting out of Park, and the NSS to ensure that the tranny is in Park or before starting the car. None of these things are essential; I have driven with all of them disabled at various times.

I will look at your other post and the diagram to try to understand what problems you're having, but replacing the whole assembly is almost never warranted.