Your model is behind the times. I can go to a site like Chaturbate or Cam4 and see chicks bangin away at their assholes with an array of apparatus w/o paying. If there is a chick I think is exceptional, then I can join and tip to help get to her goal of DP, Butt Plug, or what ever. I think the whores make their own price point for private shows.

If you want something unique, set up a Chaturbate style site specifically for BDSM. If there is one thing to be learned from Kink.com, it is that if you put out quality BDSM stuff, the fans will loyally and gladly pay through the nose for it.

$2-10/minute to some whore whose best interest is to show/do as little as possible to string you along and run up the bill is very 10 years ago.