Just chiming in because the turn this took talking about NV brothels. I was at one in the 90s. They presented a menu, and yes, they asked for $600 for an hour for what I would describe as a "standard session". Prices went all the way up to like 4500 for a whole weekend, and mind you, this was 30 years ago.
That said...... the menu was "the starting point". I ended up seeing a girl and we went in the back to negotiate. What was MSRP of 600 she ended up agreeing to 300. Now, 300 was still a lot back then but it wasn't insane like 600.
My point being... don't believe all the prices presented at face value. Most of these places ask the sky and the moon but will settle for less if you have the most minimal negotiation skills.