If a lady makes $1000.00 or more a week, I am pretty sure she is going to want the money in an SD relationship to be equivalent if not higher monthly. Some HDH's I have known in the past had arrangements that included a town home in their name, a nice new car in their name and $5000.00 a month. The men who had such arrangements with these ladies had the type of disposable income that this was just "chump change" to them. Some of these relationships lasted for more than a couple of years.
For the most part these ladies had super model type looks and no ink on them what so ever, college educated with degrees. They were the epitome of the classic HDH gal that these type men typically looked for.
Old internet article on the subject but worth reading: Expensive vs High End Call Girl