Let's see...
Playboy only want her to boost their circulation a little. That's worth one shoot and maybe a return visit. If she was being cynical, she could use them to boost and/or extend her career. Have some tasteful pictures taken, that still afford her a modicum of modesty, and coin it in at the same time.
So she markets herself, and markets playboy, and she gets paid. G-e-t-s p-a-i-d. For being a flash in the pan social phenomenon! That's if she were being cynical...

It seems as though this won't happen (yet) as she appears to have morals. Or is merely trying to drive the asking price up.