Some Agincourt Ransoms
In pre-modern times it was common to make war pay for itself. One way was to exact ransom from prisoners-of-war. The ransom for Jean II, captured at Poitiers, was so enormous (up in the hundreds of millions of ducats by game reckoning, that the French never actually paid it, the king died in regal captivity in England before the sum could be collected.)
Item Number Ducats Captor M. de Corpe 1 220,000 two men-at-arms and
an archer Man-at-arms 1 8,000 Sir Robert Laurence Man-at-arms 1 8,000 Sir Robert Laurence Man-at-arms 16,000 Unknown Man-at-arms 1 3,000 a man-at-arms Man-at-arms 1 650 an archer Unknown 1 360 an archer
In terms of HYW, the Players are at the level of the Seigneur de Corpe or higher. Family members would presumably be at rather less than what the Player would have to pay. Most NPCs would be at the level of the men-at-arms, the precise amount presumably varying with the status and skills of the NPC.
Amounts apparently varied according to the rank of the captor as well.
Although these figures are for a great many years later than 1337, there was little inflation during the period.