Found on the different versions of the herbalists in Chardok Herbalist house. We were camping the Grand Herbalist for necro epic and also got: Dew Clover, Mist Povar, Flame Fenin, Rune Ellipse, Words Distress, Words Recall, Scales of Veeshan, Yaeths 91, yaeths 61, Bolts of Tallon, Runed Emblem, several other runes and words, a bunch of all sorts of Shaman Alchemy weeds and herbs, and the Etched Signet.
Magician Research for the spells Burnout IV (Rare), Rage of Zomm (common), Greater Vocaration: Fire (Common), Shock of Fiery Blades (Uncommon), Aegis of Ro (Uncommon). 1-2K should be reasonable, as the spell Burnout IV can go for 5-10k.
I found the words of restraint on the luggalds innitiates in Nadox as well as Bolts of Tallon. So I would assume the flame can drop there as well. Yet to see any of it. Whenever I ask no one ever has any for sale nor do they have any to link so I can at least see what the bugger looks like.