
Azazyll |

I've looked through all the PF core books and perhaps I've just missed it, but is there a magic armor enhancement that reduces spell failure? I'd rather not have only special materials as an option. Also, are there spells that do this? I remember one or two old 3.X era options, but can't seem to find any for PF

Cevah |

I have a breakdown on Celestial armor here and here.
Celestial Armor has a mundane component that works out to be standard chainmail, not mithril. Celestial plate has no mundane component. Celestial shield has a heavy steel shield. This was arrived by determining the portion of the price counted as magic, then subtracting it from the total price. The result was 300, 0, and 170 respectively. MW chain is 300, MW heavy steel shield is 170.
I also believe that Celestial is a +1 & flat cost, not a flat cost, as it comes mighty close to being what +1 would be.
With these breakdowns, you can add special material easily.
/cevah