I have no source for this, but I believe a specially targeted audience (e.g. an otherwise unrepresented age range, gender section etc.) would make her ads worth

I have no source for this, but I believe a specially targeted audience (e.g. an otherwise unrepresented age range, gender section etc.) would make her ads worth more to specific advertisers. I mean to say that it's hard to jump from the given average to its standard deviation.