I'm not a professional and have no professional training/education in art other than from what I got while in high school and my own personal experience and growth though experimentation and observation in it since then.

All I can give you is my opinion as a hobbyist and someone who appreciates art and sometimes even buys it.  I'm not giving a critique of your work, just more of a general personal opinion.

I can tell you that I would not spend my money on a "Poser" image that looks "out of the box". What I mean by that is a figure in front of a background, with a few props, some lights and rendered.  Not that I don't consider that art, because I do.  However, I don't consider it "original" enough for me to spend my money on. I find that most straight from Poser renders lack depth. I'm not talking shadows.. but sometimes those too. What I'm talking about is the glassy doll eyes and zombie expressions that many figures have, the staged/posed clothing that you get from conforming clothes,  plus the image often looks "sterile" and  "too clean" (smooth edges give the look of things having been pasted).

Now before I have every Poser user around jumping at me, I'm not saying all Poser images are like that,  but the majority of  what I see in the galleries around the net for "poser" images  are like that. Those that don't look like that are few.

IMHO anyone who wants to use poser to generate income for themselves from the images they create needs to work on mastering their post work skills in order to make the image not look so "boxy digital" which is what most straight from Poser images look like to me.

I would be more inclined to spend my money on something brush or digitally painted, hand sketched, or photographed.

That being said, I should add that art is an individual experience and what some like others don't and vice versa. For example, I remember reading somewhere that someone paid millions for a huge wall mural that  was a painting of 1 pure white stripe and 1 pure black one. So it just goes to show that the value in an image is whatever the person buying it places on it.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi