I'm finishing up the Guide article on the Bard right now and will be shooting it to Carl later today. I would not call my testing exhaustive, but for the 3 Quests I played with the Bard, it would appear that a) all poems (regular and epic) sell for $35 in inventory, and all plays (comedic, tragic and legendary) sell for $95. b) It also seems to be the fact that no matter what combination of Themes you try, those values remain the same.
But, what I'm wondering is if the various Themes might have an impact on actual pay for Reciting a Poem or Performing a Play. I don't think so, but I was curious if anyone has found out that info. Thanks.