For solo clips it depends on a bunch of factors and on what site you post on, but for a site like, let's take C4S, the standard for solo, by the minute clips is $1 a minute if it's not certain fetishes (such as findom or certain femdom categories). For two people I'd double it, easily, because you should pay charge to pay both parties. You also have to typically factor in editing time when it comes to filming two people-which I've heard can take longer, I do solo work primarily-lighting, positioning, etc.
It becomes more complicated when two are involved versus just one person, imo.
For pics it honestly depends, and I don't sell vanilla picsets so I can't give you a ballpark on that. Getting access to MO will help you better price out what you're doing and where you're posting them to, since that'll really help us out. This is the pricing for standard on clip sites rather than on token sites, they might follow a different standard than on sites like Clips4Sale and iWantClips. I'm a clip producer, so this is what I tend to run on when I do my fetish content.