Cels Forum

Well, considering Taro has had, what, 3 updates in the last
week, you can probably just bid your time and keep watching
them.  Also, it seems odd that a flood of cels from a 
series would come from just one dealer- I would think some
other dealers would start carrying some more Utena cels 
soon too.  
I've noticed that it seems rare for there to be a monopoly
by a dealer for a release of cels from a series- for example
as a Devil Hunter Yohko collector I was thrilled to find 
cels of Ayako from her transformation sequence in no. 6 at
anime-cel.com.  A couple of weeks later, some other cels
from that sequence showed up on Ebay, and here at Yann's 
site.  The same went with cels from Yohko's transformation
in number 3, there were some at Asylum, some at animanga,
and then some at a-c.com.  
So don't give up hope!