"Mommy, Havral broke the economy."
Same rune, same day, same place. At any merchants I could sell the rune for twice as much as the rune trader would buy for.
However, the minor beneath the major I was selling was the same price at both.
I like selling unwanted runes back to traders since this helps maintain a steady flow of runes for people to buy, but... Bah. Bah, I say.