Your sprite looks very cool indeed.Im using 3d models and then i render them so that i can use them in 2d games.There still is a market for spritesheets if you want to sell some ,But then these spritesheets must be at the very least as good as the streetfighter sheets to name an example.And even the streetfighter sheets are going for free seeing that they are copyrighted.
Create a demo game with your sprite to show how good the sprite will animate and behave in different scenarios.That may get people interested in buying the actual sheets.But with all this new tech at almost everyone's disposal it would be very difficult to sell any sheets for whatever reason.
Selling 3d models on the other hand is still very popular seeing that not everyone can create 3d characters or cars.Although that seems to be changing as well.I can create highly detailed models with zbrush ,Blender3d and even daz3d in a manner of minutes.So one of these days 3d models will also see a decline in the market as 3d model creation programs are getting more user friendly as they come out.