yea, its hard to get the audience indeed. did you try Etsi? and other platforms like that?
one of the hard side of fashion is the fact one need to have different sizes, making it quite costly.
15-25$ is not much in my country. depends of course on the quality of the material. when high quality, and prints stay good after washing, and cotton is high grade, 25$ is very inexpensive in my country.
hope you'll be able to get somewhere! :)