i believe that it means you have to say what kind of people or age group the story is meant for them to read.
Maybe the price will increase due to the cost of advertising (if a small business ex.10employees) but if enough people buy it ,due to the advertisement it will cost less due to the companies profit earned.
For more obvious reasons, drug abuse is more common with family members who abuse drugs due to the fact that drugs are far more accessible. Also notably, the family member(s) are most likely affiliated with others who are drug abusers.
