Korgoth of Barbaria is a pilot TV episode for what is essentially a Conan the Barbarian show, but a lot more adult humour than the "Conan the Adventurer" cartoon series from 1992 which was made for children. Created by the same group of people who make Samurai Jack, Dexter's Laboratory, SpongeBob SquarePants and Metalocalypse only 1 episode was ever made because it was considered "too expensive".
However if you watch the pilot episode (above) you will see the production value was the same as other cartoons so it would have been roughly the same price. It seems more likely that the "too expensive" concept is just an excuse and there might be a different reason why it wasn't made.
The pilot episode first aired in the USA on June 3rd, 2006 at 12:30 AM (EST) on Adult Swim.
Korgoth (voiced by actor Diedrich Bader) is essentiallyy a parody of Conan the Barbarian and sword and sorcery stereotypes in general. The show is set in a post-apocalyptic world where sorcery and the remnants of technology exist simultaneously, similar to Thundarr the Barbarian. Even the music (heavy metal/thrash metal) is a parody of fantasy magazines like "Heavy Metal".
Despite repeated attempts by fans of the pilot episode executives are mum on the topic of ever making more episodes of the show or even a film.