I posted on SLX, and the seller responded. She had taken a class and got the pants and other textures from the instructor. She says that she hadn't realized that the pants were free in other places. Also, to her, she had 'made' these pants from textures that someone had given to her, so how could it be unethical for her to sell what she had made?
I explained as well and as politely as I could the problem with two issues here as I see it anyway.
First, this is copywright infringement, so that's why it's wrong. Second customers will get upset with her if they pay her L 175 for something that is free somewhere else. I went into greater detail in the post in SLX. Also, I tried to be as kind as possible to her, wishing her luck, etc.
Anyway, to me it sounds like an honest mistake made by someone who does not work in the graphic arts industry. Hopefully, she will look over her products carefully and think things through more in the future.
So she learned some things new, and so did I.