It's usually suggested by marketing " gurus "who usually know more than you do, that there is a benefit to offering packages, as ( they claim ) it makes the client's mind up for them!
In reality, what makes up the clients mind, is the person in front of them and / or the quote you just gave them.
To charge extra for stain removal, etc, is putting yourself in the bait and switch camp, which has been condemned by everyone, almost. Fine line between Upsell and Bait n Switch!