This actually could be really good. My initial reaction was paying for an entire scene...
But a model like this could work:
$50 per minute (hypothetical value)
Discounts if model doesn't matter
Discounts if non sexual
Extra if it includes cumshot
etc...
Different pricing tiers would be very important. SLR could have female performer (let's call her Sarah).
5 people want a custom blowjob with dirty talk for 5 minutes. These clients either don't care about which model is used or Sarah matches the requirements. Sarah then is filmed for 5 different scenes.
Having a relatively cheap option available is important to get people pulling their wallets out.
While few would be likely to pay $5000 for a full scene, I think many would be willing to pay $100-$200 for their favourite pornstar talking dirty to them in VR for a couple minutes (and retain the video).
Could be cool...excited to see a more fleshed out business model.