Don't be a dumbass about this, If you really want to fuck her it shouldn't cost you anywhere that much money. All you have to do is get close to her, tell her you have some extra coin and want to know if shed join you for a nice steak. Take her out to the best steakhouse in town, wine and dine the shit out of her, booze, appetizers, dessert whole nine yards. Make sure you dress nice, go buy a new outfit if need be, slacks and a dress shirt. Now you'll have to have somewhere planned to go after this so spare no expense, try to make it a romantic spot. Make sure you have champagne on ice, don't let her buzz fall the key is to keep it going until shes drunk but not wasted. The key to this is to be very charming and keep her buzzed. After its all over take her some place you can be alone and put the moves on her. If she rejects your advances then proposition her as a last resort. Do not offer he more than $500, have the cash on hand and let her see it. Start off asking for a blowjob and then keep throwing cash at her until you get her pussy. Note this will not work if your a tool and act all nervous only thinking about how bad you want her pussy. Make her feel comfortable and think along the lines of you wanting her to be your girlfriend. Afterall if you do things right it may only cost you a nice dinner for sex and with 6 grand you can buy lots of those. and dont forget to jerkoff a day in advance or that day if you have the regen, you dont want to blow your load to fast. Also this is not wrong, if its what you want and nobody is getting hurt, then fuck it go for it.
6G is all night partying with world class hookers... all for one girl? Dude, good dinner and decent bottle of wine or champagne will get you into her panties for a lot less than 500.
Dude you could be in a mess of trouble if you proposition her. What do you think she is a prostitute? Find ways to spend some time with her by taking her places and she if she is even interested in you. If she likes you and is not put off by incest then she will have sex with you.
To each his own.