It will basically all come down to experience. The more experienced the model is the more money you should be willing to give and more experienced models tend to have their own rates. I still consider myself new blood, so I only charge 50-75 an hour, but I know some models that are more well known in the fetish industry ask up to 100 an hour. Of course this is if you're hiring actual models and not desperate vanilla women like college students looking for any kind of money they can get. I personally have never liked the thought of using people who are desperate for cash. I'm worried about how they'll feel later down the road after the clip has been posted online. One thing you need to make sure you have is model release forms.