To my admitted annoyance, I noticed a while back that Walmart was selling DVD boxed sets of multiple seasons of "South Park", specifically Seasons 1-5 and Seasons 6-10.
In the meantime, as a relatively new Blu-ray household, last summer we purchased season 20 of "South Park" on Blu-ray, rather than the DVDs that comprised our collection of seasons 1-19. It looked amazing, although the season as a whole was kind of a bump in the road.
Apparently about 3-4 months ago, Seasons 1 through 11 (Season 12 was apparently the first ever released in both formats back in 2009) were apparently upgraded to widescreen HD and released individually on Blu-ray. I never knew this because I just never saw them on any store shelves.
Maybe that's a good thing; I was at Best Buy over the weekend looking for some Saturday night viewing--and lamenting the apparent lack of recent comedy films--when I saw a single copy of "South Park" Seasons 1-5 on Blu-Ray for 42.99. Ten discs, 79 episodes, and about a $100 savings as compared to the individual seasons. Bought it, brought it home, and have already gone through the first two discs.
Here is where it gets weird: Although I own the title, and the discs do appear to contain what they purport to contain,
I'm not finding much of anything online to verify that this set even exists--nothing on Amazon, on
http://www.tvshowsondvd.com, and Best Buy's website doesn't even mention it.
In other words, the set is out there--
but you apparently can't order it from any online retailer.
As for a Season 6-10 Blu-ray collection (again, these are now available individually on Blu-ray, along with Season 11) it has apparently not yet been spotted out in the wild.