Countess runs, assuming that you can survive them, or have the patience. Alternatively, you can try to find an item that is worth the high runes. Hell hellforges quests, trading away PGems, and the like can also result in runes. Alternatively, finding Keysets can result in a high rune for trade. I'll see if I can trade my 2 Lo runes for Jah and Ber.
