Hiya!  I didn't buy any of those Powerstone cels, 
but I just wanted to let you know that Animegame 
has two in their Misc section.  I was just 
browsing through and I remembered your post today, 
so I thought I'd let you know.  The URL is - 
http://www.animegame.com/misc.htm (MISC-25 & 
MISC-26)

^_^