The cost of these options is NOT included in our quotes. The cost of these options is added on at the rental counter (along with taxes, which can add upwards of 30% to the cost at some airports). In some cases, these options are negotiable in terms of price, or even being thrown in for free. If you wear a smile and ask nicely, you'd be surprised the deals you can get.
Note that it's not usually necessary to request these items when you reserve the car. Simply advise the rental agent when you arrive at the rental counter that you need one of these items and they'll be glad to provide them for you!