Hi Flareon^^
Most Ultra rares bauble worth (or UR) are listed in the official Bauble sheet, located here:
Official Bauble thread and infoOn the right hand side-you may have to look up the name of the creature in the codex first*
It is sorted by year on the tabs at the bottom.
I would like to take this opportunity to send Mucho Kudos for Star. Kinno and Kisa for making, preparing, and updating this awesome guideline for Eldemore creature prices^^ Especially for those of us still collecting the wonderful creatures of Eldemore^^
Hope this helps^^