i think if steve changes "sexual" to "sex" he is 100% correct. i doubt that they would charge for sex, and i know with absolute certainty that Sara would most certainly not.
But the word "sexual" opens up many acts that many if not most dominas have or would do in the future. i know many doms that made their clients perform oral sex or anal worship during sessions, and not just with regulars, personals or boyfriends/husbands, but with many if not all their clients.
And of course now many doms allow oral service and even sexual services in a session.
i'm a purist and love the dominas that deny me sexual activities the most--which is all of them; how lucky i have been. They are so hot when they do that. And i don't feel too comfortable giving oral service to doms that do that with clients and others, but it's hot imagining they do that with others. i have only done that with friends that dominate me. But for me, it seems to take away the thrill of ultimate denial, so i never ask for it with pros. Guess i was born to be cuckolded, and i practically beg for that.
And a final note on "sexual". It is arguable that all acts in a session are sexual in nature, if it is argued that the client is turned on by being whipped, cbt, body/foot worship, etc., or even that the dom is turned on by the session. There are plenty of interesting threads of this nature on maxfisch, given the increase of dominas being arrested in NY and the closing down of bdsm houses the past year or two. And in most of those threads it is universally agreed that most acts in session are "sexual".
It is an interesting grey area for discussion that's for sure.