I'm looking to armor a mount. As per the chart on page 123 of the Player's Handbook, this mount is a Large Nonhumanoid, meaning the barding will cost four time as much and weight twice as much for the respective armor for a medium humanoid.
The only issue I have is the DM can't make up his mind on whether or not the factor of four increase applies to only the armor's base cost, or also applies to the masterwork and material cost of the armor.
Does any one know how exactly this is calculated, perhaps through the deconstruction of some 3.5 magical mount armor by price? ×