Pricing strategy is a deep topic, that relates to your confidence, market-understanding, ability to assess your own value, and more– but I’ll simplify the best I can:
You can charge whatever you want, but you must make sure the value you deliver is worth more than what your fans are paying.
If your fans value feet videos highly, and you make the best foot content around, you can charge a lot for it.
If you make the best foot content around, but your fans value big boobs, you can’t charge much.
If your fans value personal interaction highly, and you’re the DM-Queen, you can charge more.
If your fans just want jerk-off material, fast, but you spend your time trying to engage them in DM, you can’t charge much.
If your competitors put out iPhone videos, and you’re pumping out Hollywood -level footage and offering free calendars to your regulars, you can probably charge much more… *if* your fans value that stuff.