It looks pretty bad. It has been described as worse than Xena & Hercules (but I kinda liked those). It appears that the series has yet to be released on DVD. As bad as it looks, I am tempted to find it.
There was a toy line that was loosely related to the show which even expanded to many characters and creatures from Barsoom (although they never appeared in this show).
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Visit this link for more about these toys.
R. A. Salvatore wrote a novelization of the pilot episode in which some plot elements revolved around Pellucidar. This book is one of only three non-Edgar Rice Burroughs Tarzan novels that were authorized to be written.