The Model 3 one? Doubt that they're significantly more expensive. They have some problem with frozen door handles which they should probably get some fix for, like putting in a heating element. That would add cost, but also not much.
The door handles are a symptom of the design ego of Tesla. It's the same thing with the elimination of nearly all physical buttons. It's the right instinct but they've taken it too far.
And the S and X door handles can be repaired for much less than people are buying the replacements. The rebuild kit uses stainless parts instead of cast.
https://evtuning.com/products/model-s-door-handle-rebuild-ki...
I think you've forgotten of the days when you could literally snap door handles off of Audis by pulling too hard.