Also OP I see you mentioning on one or two of the profiles you've added "+£20 for CIM + £20 for Swallow too expensive"
That's £20 for either, Never have I paid a prossie £40 in that situation where her advert is priced & setup like that.
I also always assumed they meant "That'll be £20 to CIM and then another £20 if you want me to Swallow it too."
Thinking about it again I suppose if they didn't treat it as one transaction the conversation could end up going a bit like this:
Me - "And I'll give you an extra £20 to Swallow"
Her - "Then that'll be £40 for CIM + Swallow"
Me - "No, I only want Swallow. I'm not paying for CIM."
Her - "How do you expect me to Swallow without getting Cum in My Mouth?
Me - "That's for you to figure out. You want this Extra £20 don't you?"