"Cash For Attention" - Over-Complicated?

I have been thinking about the whole idea of "Cash For Attention." On the one hand, it says that the domme's attention is worth something and the sub should pay for it and in advance. But then, no sub should believe that just because he has paid, he is entitled to anything. The sub should always pay submissively and willingly and never expect anything in return. On the third hand, it expresses the sub's submission to Mistress in a concrete way, with cash.

Then, sometimes, the sub is paying for Mistress's attention just so she can give him attention and then manipulate him and take more.

In my case, Ms Pauley Belle does not demand cash for attention. But, I think she enjoys it; the tribute, the begging, the submission, the symbolism, the tribute.

Thoughts?