The sale section is kinda horrible if you have premium. Like 95% of the scenes on each sale page is in premium. And with often 20+ pages to check I'm just not going to look for the odd scene on sale that's not in premium. Like I would like to look through scenes on sale and get a few if it was possible to filter out premium scenes. But that's not possible and I'm not going to spend hours to go through all those pages.
The only scenes I got as PPV were when there's a site-wide discount voucher of x% off on any scenes in cart. Just a use-case example...
Of course the main reason PPV isn't really working is because the studios/publishers set the individual prices way too high.
Btw just an idea I think might work are sale bundles of pornstars, like a set price for all scenes of a specific pornstar. Assuming the pricing isn't as crazy as individual scenes are, it might make for good starter sets for new VR users to get all scenes of your favorite pornstars at once.