> The user had spent the entire weekend developing the app, and admitted that he would have been more careful to manage his Codebuff usage had it not been for this bug.

On the flip side, there's probably useful things to learn from how he developed his app when he didn't feel the need to be careful; in a way, your $500 mistake bought you useful test data.

In my own use of Aider, I noticed I'm always worried about the costs and pay close attention to token/cost summaries it displays. Being always on my mind, this affects my use of this tool in ways I'm only beginning to uncover. Same would likely be true for Codebuff users.