I wanted to answer with the same theme - don't wait to have billing perfected on all edge cases, focus on covering the normal cases and release. You can always go back and fix those edge cases later, if they even ever happen to you.
More in general, when you have a mountain that looks too high to conquer, set a partial goal that looks achievable and only focus on that one, without thinking about the end goal until you reach the partial one. This helps a lot in my experience.
More in general, when you have a mountain that looks too high to conquer, set a partial goal that looks achievable and only focus on that one, without thinking about the end goal until you reach the partial one. This helps a lot in my experience.