[chaosjevil]

I think that they do.

Third party apps need to do a lot of API calls, every time that the user sees content, upvote content, comment content. If you're just retrieving it though? We can simplify it to one API call = one comment.

With that in mind, $0.24 for every 1,000 API calls is damn cheap. It means just $2,400 for 10M comments. It's pocket money, and likely cheaper than to hire a codemonkey to sort web-crawled stuff.