alt Hacker News> but I imagine she values her time highly enough that $20 is not worth very much
Did you notice that this is completely unrelated to the idea that the $20 would turn a profit for the business?
It's just the argument "$20 isn't very much money, so why not spend it?".
In this case, because spending it was more hassle than any time she would have saved by doing so. If she had no choice, then spending it would not have been an issue.