The grind is a big part of it, I will grant you that, but the grind is not completely how you do it.
There has to be a lead up for both the body and the mind. Women are a multi-faceted species and different facets dominate each woman. The key is you have to get the individual woman ready for the grind. Even for the same individual, the lead up may vary from day to day or situation to situation. You have to be able to recognize this and react instinctively. Flowers, candy, dirty talk, props of various types and settings can be part of the equation. The key is by the time you get to the grind you should already have them satisfied and the grind itself just puts them over the edge into bliss. If you have done all of these things properly and you finish big with the grind, a woman will be more than happy to pay you extraordinarily well.