Please feel free to pose your own questions here, hopefully Pat and/or Alex will answer them. If you can find an answer to a question another poster asked, feel free to answer that too!
First question: Is there a reference that explains how percentage increases to cost from Upgrades stack with each other? I can guess that the percentages only apply to the base cost (ie, upgrading doesn't cost more if it's already upgraded), but I can't find anything that specifically says so.
Followup: How about character options that reduce the price of gear? How does that interact with upgrades? Again, I'd guess that it applies after all upgrades are taken into account, but I can't find a reference to confirm this.
I suspect it goes something like this: A Soldier 3 wants to buy Fitted Dwarven Partial Chainmail Armor. The Chain's base cost is 100s. Fitted is a +100% cost, and Dwarven craftsmanship adds +50% cost. This works out to +150s, for a total price so far of 250s. Then the Soldier's Armor Use class ability kicks in, giving a -20% discount. 20% of 250 is 50, meaning the Soldier ends up paying 200 silver for his nice new armor. Is that correct?