Still, I see other models with PPVs just as expensive who are more popular, but aren't (imo) as good looking or as into it. That's not even considering the likes of Amouranth, Peachjars, Natalie Roush and their ilk, who make it a point to take your money and try to give as little as possible in return.
In regards to photo sets, I suppose Nastya is a 'one-woman-band' so it's not really feasible. She'd have to cough-up for a photo-shoot and charge that back to the buyers. I'm not into photos myself, so I don't get the appeal anyway.