Sounds good, but you never know what you're getting with hookers.
if you have 2-3 girls you've known for years... you know they are 'clean', you know they're drama-free, you know there will be no legal trouble...
you have relations with them each month. You toss a few bucks their way, maybe put cable in her house, take her kids to the park every saturday... you 'pay', but not in the sense that you'd get busted for it by Vice or get beat up by a pimp. You show up with the pizza, red box movie and a bottle of wine... you pay $30 and you're in like flynn.
Plus you get to know the, you like the sex, it always stays fresh, and when it's not, you take a few months off.