Edit: I'd also like to point out that "free shipping" listed on the product page and "shipping included in the price" listed in the FAQ are different.
Even if you say "free shipping" the shipping is still just included in the price. Tanstaafl.
What would you say is a fair price point?
I also think far too much of the print is just the blue background.
> being the only one of its kind; unlike anything else.
I think all the posters you might sell will look a lot like each other, and are therefore not unique.
Unique in the sense you use, is not very interesting and hardly a selling point. A stick from my garden is also unique, so is the drawing from my kid.
"Designs are individually generated and made-to-order, no two prints are the same."
I would love to be able to upload my own processing art and print that. Is that something you would allow for?
What service are you using for the procurement and shipping? Can you tell us a little about how this was put together?