Earlier quoted context omitted.
"which I think adds weight to the argument that is unfair behaviour by Apple" Apple takes back from the developer exactly what they gave the developer. This has been verified by a number of people, and this submission is just farcically wrong. How is this nonsense front page on HN? Is this community this clueless?
See this comment elsewhere on the thread: https://news.ycombinator.com/item?id=23992485 If you charge $10, you get paid $7, and if the customer refunds, Apple removes $10 from your account – you'll be $3 worse off than if the customer never purchased anything.
Unclear whether it happened in this case.