Possible Clues:

• Charges are reduced by a third to split the difference
• Customs duty
• Thanks to the nomad, this is so taxing
• Import duty, e.g.
• Duty bringing state to block river
• Display of irritation about a restaurant's opening menu
• Sentencing scale
• Duty of a queen intervening in row
• Backing those in 20 down consumed by stout - the imported costly type
• List of prices