Le prix "de maitre" est inclus dans le prix du mithral.

Chemise de maille en Mithral : 1100 po. Chemise de maille en mithral taille G : prix de base x4, donc 4400 po.

Le prix de l'enchantement reste inchangé.

Une FAQ vient de préciser le coût des armures

Cost Multipliers for Items: When an item has a cost multiplier, for instance for its size, unusual shape, or composition, does that apply before or after additional costs such as for making the item masterwork or using a special material?

First add up the total cost of the base item, including any special material. Then multiply by any multiplier for the size and unusual shape from Table 6-8. After that, add any additional cost for masterwork, if that isn't already part of the special material. Finally, apply any multiplier for discounts such as the 1/3 cost multiplier for crafting the item. For example, a chain shirt costs 100 gp and a mithral chain shirt costs 1,100 gp after the +1,000 gp cost for mithral. If you were applying the 1/3 cost multiplier for crafting the item using the Craft skill, the cost multiplier from Table 6-8 based on size and body type, or both, you would apply those multipliers to the full 1,100 gp cost for the mithral chain shirt. This means a mithral chain shirt built for a rune giant costs 8,800 gp and a mithral chain shirt built for the tarrasque costs 35,200 gp. On the other hand, a Large masterwork cold iron greatsword costs 500 gp (50 gp for a greatsword, doubled for cold iron, doubled again for a Large weapon, then adding masterwork last because cold iron isn't always masterwork).[/officiel]

En gros, tu calcules le coût d'une armure tu multiplies par la taille et la forme unusuelle et tu ajoutes le prix pour la faire "de maître" (si ce n'est pas déjà inclus dans le coût de l'armure)