Bah, don't do hookers unless they are a last-minute impulse item when you are drunk. There are plenty of young women that are willing to give it away for free because they want to stay in a luxury hotel, eat in fancy restaurants, swim in the pools and visit the LV attractions. In large part, this phenomenon seems to be driven by these young ladies' desires to take selfies and other pictures to post to their social media accounts in hopes of invoking the envy of their friends. Note you are never included in the pictures.
But back to your question... Hookers are very reluctant to give you a price nowadays and utilize time-proven sales techniques from mainstream businesses to get the highest price.
Potential Client, "How Much?"
Strumpet, "As much as possible daddy."
Potential Client, "How Much?"
Trollop seductively, "What is a night with me worth to you?"
(These responses are simply a rehash of the old car salesman line of "How much will you give me for it?" When asked about price.) Their ideal client doesn't know the market rate and will offer more than the market rate.
The first response about price from her is usually accompanied by her standing back and giving you a subtle hand wave over her body that emphasizes what she thinks are her best features. If she is confident nobody else can see her, sometimes she will give you a subtile sexual gesture at this point.
Not that I have any personal experience with all of this. This is simply what my friends have told me.
For high-end casino girls or luxury companions, the negotiations are more straightforward but at the get-go, it is assumed you are willing to pay a premium for their 10 out of 10 looks, their high-end dress and their ability to fit in at a high-end venue. Think of someone on your arm that will make you the envy of all the rich guys around the resort. Because of her mannerisms and dress, people are more likely to think she is your trophy wife rather than a strumpet. At least that is what they tell me. I have never experienced such things personally.
You can't get players card points but they will take titos. Again, this is simply what my friends that are familiar with such things tell me. I have never personally experienced such things.
The supply chain is limited in some venues as the Strip Casinos have really cracked down on them working the casinos. You will likely only encounter high-end (expensive) luxury companions near the casino bars nowadays and they won't solicit you unless you have the right dress and you know the subtleties of how it works yourself. It is a long game as she may spend half an hour or more watching you from a distance before she approaches. For her to approach you, typically you will have had to return her eye contact and or a smile peroidly back and forth. Typically, she will slowy work closer to u switching seats. Each time she moves, she watches for your response as she gets closer to see if you are still receptive. Then she sits down next to you. Typically, the first 10 minutes of the initial conversation in this type of venue consists of you offering to buy her a drink and making non-sexual small talk with her. She is useing this time to vet you and you should be vetting her. Again this is simply what my friends with knowledge of such matters tell me.
I suggest Las Vegas Twitter if you want to find out more.