Seems that Cowboy Bebop is still popular in Japan 
so there aren't many cel collectors that are 
willing to give them up.  Plus, the new Cowboy 
Bebop movie will be coming out in June in Japan.  
That should renew interest in the anime AND 
probably drive up the prices on the cels!  
*sigh*  Wonder when they'll be releasing the cels 
from that movie!