This just popped up in my Facebook feed. They're $59.95, to be released on July 30.

http://www.discotekmedia.com/samurai_pizza_cats.htm
Color - NTSC - 2.0 - 52 Episodes- 1200 Min - Aspect Ratio 1.33:1 - 4:3 Full Frame (OAR) - Region 1 - 1991

I asked some questions in their FB comments, and was told 1) free shipping, 2) sourced from Saban's masters, and 3) they include the "On the next... Pizza Cats!" previews.

(Also, hello to all the people in the SPC fandom that I haven't seen in roughly a decade!)

Not sure if this is the same one MWDD was referring to, but I recently found this one:

http://www.torrentportal.com/torrents-details.php?id=975957

It appears to have all the released Tsuneko encodes except for "A Wet & Wild Weekend".  The rest of the episodes range from 30 MB RealVideos to 130 MB AVIs.