I can do 22.9 million runes per drop
1 drop is 50 fg, or 10 drops (229 million runes) for 250 fg
Also Trading any matching pair of un-upgraded melee weapons or faith seals/sorcery staves for 10 fg (eg. 10 fg gets you 2 rivers of blood, or 2 frenzied flame seal)
And talismans 10 fg each