I have seen some Transformers cels (80's) on Ebay
and 3 cels from Headmasters series.  I have also
seen Japanese Beast Wars II and Neo cels (I
ordered a group from Japan just recently).  But,
as far as cels from the other series, I have yet
to see any fromt eh other Japanese series
(Masterforce, RID, Victory, Armada, etc).

What would I KILL for a cel of Star saber!!!  *sigh*
Your best bet is checking out some Anime
conventions as I have been searching for some
myself and have yet to find any that are worth while.

J-Decker