Re: Digital Art
the term "Digital Art" is a very broad one. too broad.
like 'oil painting', it only describes a medium, not a style (abstract, pointillism, etc).
some is fine art done in digital - some is nothing more than a photo reworked unimaginatively in Photoshop. the rest is in a very wide band in between.
the question is not answerable as posed, but by showing us some of your work we might have strong, albeit naught but a personal opinion, of whether we think it is saleable. And the answers will be as varied and opinionated as we of WC are.
I listen to the teachers, I listen to other players, watch the conductor as she guides the orchestra, but ultimately I listen to a my own drummer. Sometimes I am in tune, often everyone covers their ears and run away.
but every now and then I gather a crowd and they applaud the new creations coming from my drummer a he guides me on my own path.
as Nike prods us
"Just Do It", create and then see if it is marketable, and enjoy the journey
life is good