I don't think you should be afraid to raise the prices a bit. I don't think I would buy this kind of art, but I'm sure that anyone who wants to buy it wouldn't mind paying 50-90 points for one of your full bodies, rather than only 30.
At a price so cheap people might not take your work seriously. Though it might help to have more variation in your images like for your adoptables, put them in diffident poses. Show people what they are like.
You're selling them for thirty cents? That's bugger-all money for your work. I would probably focus on improving your art so that you've got a more unique product to be selling, rather than colour-customised base dolls. Then charge more. Most successful commission artists have a unique style and high skills.
What do you plan to do with the points? Are you saving for a membership?
Are you selling adoptables? They're a different kettle of fish, people seem to like to buy them and people sell them for really cheap. I don't really understand how they work or why people buy them, so I can't be much help there, sorry.
To be blatantly honest: I wouldn't pay for it. But I have a pretty high set of standards, when it comes to paying for work. But if it's you... I won't offer my work for only so little points. Points are worth almost nothing... just a few cents. Why would you be willing to work for a few cents?