There's no PM function but I can post it. Can only speak for Xarcabard, but the Demon NMs were lottery spawns from the normal Demons in the Tower area and seemed to drop 100 pieces at an incredibly high rate (100% or near 100%). Reports on BG seem to indicate that a similar system is in place in the other zones as well. Pre-existing NMs simply lotto spawn and drop a 100. If you camp one or two of them while someone snipes the TE NMs (these are fixed location timed spawn NMs, and very easy to solo) you can make a fair amount of bank on Armor and 100s.