I had a thought. I know that XB Indie Games are priced by size, and thus putting them on sale wouldn't work. But since songs are priced by the submitter, is it feasible/allowed to put songs on sale? For that matter, what about any other edits? Like, if there's a typo somewhere in the lyrics or metadata, or the album image changes, or something. Or do we just have to make absolutely, positively sure everything's right before submitting?