That is a really interesting point, actually....
Where *are* all the cels?  When I see that my 
favorite cel is, for example, a19, I know there 
are AT LEAST 19 other cels in the sequence.  
Where are all the others?  Sometimes we run 
across 3 or 4 of the same sequence, but as far as 
nice headshots and such go (heh, my favorites)- 
they are nowhere to be found.  Not just cels from 
a sequence, but from lots and lots of episodes.  
Is that where new cels come from?  Some strange 
vault that opens twice a year to let a few new 
cels trickle out?  ^_^  If so I'd like to open an 
account at the 1st bank of Studio Pierrot...
But seriously, I wonder about that, especially 
when a lot of new cels suddenly appear at various 
sites. 
And as much as I think FY prices aren't going to 
go down a whole lot overall, prices DO go down if 
there isn't enough of a market.  *feels pretty 
good about AnC prediction* - of course, that's 
also thanks to dealers selling things at more 
reasonable prices- (AC, AA, AT, etc).