Complete Series on DVD at Walmart for $20. (Aug. 2012)
Walmart currently has the "Branded" complete series (48 episodes on 6 DVDs) from Timeless Media Group, for only $20. (Originally, the suggested retail price was $69.98.)
I haven't had a chance to do more than watch a couple episodes, but according to the packaging, the special features includes interviews with Johnny Crawford & Larry Cohen.
Here's a thumbnail scan of the cover art: http://i48.tinypic.com/2dh5utf.jpg
Enjoy.