As far as I know, UDCA is only available by perscription (Ursodiol).
With TUDCA, the only other one I know of besides nutraplanet is called Aegis. Was looking at picking it up for a while since nutraplanet STILL HASN'T RESTOCKED TUDCA grrrr....
Nutraplanet's tudca is the best value by far, but that's rather irrelevant when they don't have it lol.