"It's hard to have a gut feeling about how many pieces of cheap paper is moral to take in exchange for a durable good."
Except it's not "cheap paper", it's very precious and expensive to the poor folks parting with it.
Except it's not "cheap paper", it's very precious and expensive to the poor folks parting with it.
That doesn't mean overcharging necessarily doesn't do real harm; it just means it requires mental effort to understand it as moral or immoral. Maybe not much, but more than deciding whether outright killing someone is immoral or not. Ergo, it is not necessarily true that no moral dilemma might benefit from discussion.