I was wondering if the artwork that I have done is worth buying, or setting up an art shop for, and if so, the pricing.

Here is an image of what I have just worked on today. I can do chibi's, but I don't have any examples as of yet.

I think if you work on your poses and proportions more, it would be worth selling. Look at muscle structures.

you could always try doing a freeb shop, that way you can get lots of practice in :]