For personal projects, I'd rather just pay $2/month and not think about it than get hit with a random bill and scramble to migrate before the next month's bill. Bunny is perfect for this use case where you have a handful of projects that aren't all actively maintained. It just works without hand-holding, and since you're paying for the service, there's no rugpull looming.
Don't you still have to worry about big bills since bunny bills based on usage?