Unlike most porn fans, I'm intelligent enough not to do everything a porn star asks me just because of who she is.
Why the hell would anyone let another man cum on them just because a girl asked them to?
Yap, I would pay nothing nor would I do it and I'd get my dick limb from money talks alone. Better question would be how much she would pay for me to receive that male shit on me not how much I would pay to not do it...
This topic sounds more like some femdom blackmailing cuckold fantasy:
Fem: "Now you better pay me $ 500 or I'll have my manfriend overhere here cum on you, you dirty slave."
Slave: "Oh nooo. How am I so unlucky. I forgot my wallet to home. Noooo! Don't do it please..."
...while in reality he actually wants to receive that shit on him.