"transactional data"
Sounds way too modern.
Maybe stats for food sales should be regional, and not continent-wide. Then restrict them to traders, and make them spend hours to accumulate the data. You spend your hours, and learn about what happens in your area.
Sounds like an interesting feature that could definently be useful. If someone is selling at 30 gold per 100 bushels but everyone else locally has been selling at 10 gold per 100 bushels you know they are ripping you off. If this was restricted to traders it could force lord-trader interaction for a better knowledge of the local market.
