Yes, frequently enough for it to be a useful facility.
I'm not sure its something that costs "more", rather, if (a few people excepted) the entire market asks for such a facility/option, you get a cost based on unit sales which is far more units/year than a lower spec'ced item
Then, as you often find on Japanese manufactured cars, its cheaper for them to equip every item with that option, than produce a lots with, and a few without. Hence in Johns case, I reckon you'd end up paying more for a more basic model, if sales are low.
Adam