You'll get no shortage of answers here is my guess, and everyone has their own agenda for the answer they'll give you.
My advice is that you bring your "smart head" and your "Confident self." and if it's your first time especially probably don't walk in with less then 200-300 bucks my dude.
People will tell you this, and that about price, but what's important is probably finding someone who is around your age, and not ugly, the rest of it should happen on it's own.
If you're going to 'pay to win' make sure you have the pay, so you can win lol.
Don't forget a condom either, even if you're not planning on going that far a condom would allow you to do whatever you want without the risk of getting a life long STI.
They usually don't care about you, and only care about getting through the session too, these are people that sometimes bang out multiple guys a day so for them it's just a transaction that lasts only a short time where as with you it's:
Your money, and a long term specific memory that you'll be carrying for the rest of your life.
Choose wisely on your own, and when you walk into certain places make it clear you would like someone at least close to your age is my rule of thumb (If you don't see anyone you're attracted to)
There are also people here that would intentionally steer you wrong, not everyone on this board is nice my dude. Not even close lmao.
The best thing to do is manually walk into spots on your own and let your eyes do the choosing, and if they are unwilling to communicate with you, it usually means they have nothing good to offer.
At the very least it's important to be treated as a human, a lot of places will treat you less then human, you're just a wallet to be pillaged for what's in it at most places.
So make sure you're horny enough to get past this shallowness, because if you're not you'll end up wasting money.
One thing that helped me get past that sticking point is the fact that I work hard for my money, and they charge what most men would make in an 8 hour shift for 1-1/half hours of their time, and then it's "goodbye."