It's less than $1000 per car on a car that costs around $100k. I doubt it will cut too much into the profit margins.
So you are saying that the Model 3, which starts at $35k, wouldn't get it?
Do you realize that the average sales price for a Tesla right now is ~$52k? So no, a Tesla doesn't cost around $100k. (Only their top end S&X performance models cost that much.)