Let's not miss the main point, please. Pesos or dollars, the issue is SD's who offer significantly huge allowances, say over $2,500 USD a month will generally have a high expectation on her time and attention beyond any 1x, 2x, 4x a moth date schedule. And far too often, those SD's who can afford to pay in that range manifest that high expectation in rather toxic ways.
I advise my SB's that they need to be careful of these guys, no matter how good the allowance sounds. And when I meet a POT who claims a past SD was paying that much or more, they almost always note that it ended when the guy started unreasonable or uncomfortable demands like available at all times, forced threesomes, forced booze or drug use, abusive language or abusive and unwelcome sex behaviors. I don't like seeing anyone put under that type of pressure or abuse. But it does make my much more humble offer seem reasonable when I assure her that her time and business between our scheduled dates is just that, hers.
I will note that I have known some women (One that I went to high school with) who actively look for annual contracts (I mean real legal docs for "companionship") with a very rich execs, athletes, or celebrity (let's call this "Heffer Style"). The gal from my high school was getting these at $100k a year back in the early 80's!
My observation is that most SD's in Seeking or similar sites are just not in that range, or even if they have that kind of stack, they don't use it that way. And there are other sites aimed at the very affluent men (say $1m+ annual income) who want an arranged/brokered contracted companion. These guys get concierge-level service to schedule pre-screened candidates for "interviews."
Life is good
The Cat