• Kata enforces the use of NOT IN without mentioning don't use NOT LIKE. Additionally it frames the question as a COUNT of the wins/losses when this isn't the case

  • I think the text needs to be updated to reflect that you need to show ranking based on the individual with the highest price value, this stumped me at first because I read the text as prioritizing the individual that /sold the most/, not the necessarily the person that /made the most money/ from those sales.