The Market of Being Cummed Inside

So you pay a whore to cum inside her and she takes away your cum..

what a ripoff

You don't understand the principle of exchange. The whore spends time with you because she believes the price you are paying her and the cum your are placing inside her are worth more than her time and effort, while you believe that her time and effort is worth more than your cash and cum. That is, unless you are gay.