Meaning that we are promised a complete set of all seasons, and now we are informed that the final 3d season will not be available. I can (sometimes) understand that publishers stop after the first season if there is insufficient interest, but stopping just before the final season is perverse, leaving collectors with another incomplete set.

I'd be tempted to advise never to buy television series until the complete set is available, but I suppose that would only lead publishers to decide even earlier that there is no interest for the product, leading to even more cancellations. And I am not making this up. Anybody else still waiting for the final season of say, Mork & Mindy, or Unfabulous?