In my experience with Brasilian SPs, you should assume everything is extra unless the hourly rate is at least £200 or higher and even then, it's not a given. If they don't specify extras in the text, or the services you want are not mentioned, always ask, save yourself the journey.
Contacted one such SP like you mention not long ago and her inital response was just 'yes'. i had to specifically ask her rates, and then again to find out what the extras were.
On the flipside, if they like you, there is a good chance they will give you the extras FOC. This has never happened to me though

Incidentally i also feel this way about SPs who screen by race/nationality and make you contact them first before they tell you. Why not just state who you don't want to see up front on your profile? "I am selective with my time/I am choosy about who I meet/Maybe I don't see everyone' is not helpful.