How long and expensive should a date be for a woman to either pay half the expenses or be obligated to sleep with the man in exchange for the date?

How long and expensive should a date be for a woman to either pay half the expenses or be obligated to sleep with the man in exchange for the date?

Paying for a coffee date does not entitle a man to sex. Nor does a dinner at a fancy restaurant followed by an evening of dancing and drinks at a club. However, what if he buys tickets and pays for a trip to the final four? Certainly, paying for first class airplane tickets and a paying for a weekend in Paris entitles a man to sex and a woman accepting such a date would be an ungrateful bitch if she refused sex.

Updates
1 y
The characters and situation do make a difference. If a girl accepts an all-expense-paid trip to Paris, and if they are both young and beautiful, sleeping with the young man is part of the deal, regardless of whether or not it was discussed. However, if she is a pretty twenty-year-old girl and he is a forty-year-old man, just being arm candy is payment enough.
How long and expensive should a date be for a woman to either pay half the expenses or be obligated to sleep with the man in exchange for the date?
Post Opinion