ok - well from history and experience paying a girl really does depend on location. Girls in LA are far more expensive then lets say a small town/city.
Secondly it also depends on the scene you're doing - solo - GG, BG, BJ, anal, niche, etc. all come with a cost. pornstars will charge in the thousands per scene - I think once Jenna Jamison use to charge over 5k just for a scene.
Here is an idea or link that show rates
Here’s how things break down. For a “traditional” sex scene between a man and a woman, the average actress’ compensation is typically between $800 and $1,000, depending on the studio’s budget. Top-tier performers can earn as much as $1,500, occasionally $2,000, while newcomers with bad representation might earn as little as $300.
More extreme acts, as you might expect, command higher rates. The most extreme — unsuitable for describing in polite conversation — can go for $1,800 to $2,500.
https://www.cnbc.com/2016/01/20/porn...gets-paid.html