There's like 10 pages of RPG maker games on Steam. Most people don't give a fuck what did you use to make your game. It all boils down to how well you can market your game (and/or how good it is).
I guess >>23486 has a point, but there's always a market for JRPGs even though some people might find them boring as hell. And as always, since it's an RPG game, you should strive to tell a good story, which engine do you use for that doesn't matter.