Hi there! ^-^
I'd actually posted in response to one of your 
earlier posts regarding this cel, but I think my 
message got shunted to the 2nd page pretty 
quickly.. ^_^;;
As for what you said, I've noticed that as 
well..  Most Jubei-chan cels seem to be pretty 
cheap, with the exception of Jubei herself.
As such, I'm not entirely sure what kind of price 
range I'd put on it..  Speaking objectively, you 
can't actually see much of Shiro's face, and 
they're both in profile, so it'd probably be 
less..  Subjectively, however, it was a fun 
scene, and one of the only shots you get of them 
together.  And speaking personally, I've been 
drooling over that cel in your gallery since I 
first saw it. ^_^;;  I just adore both characters 
so much.
As for an offer...I'll have to get back to you as 
soon as I go balance my checkbook and figure out 
if I already spent all my money on my latest 
spree. ^_^;; Eeek.  But I have no doubt you'll 
hear back from me..  Hounding you.. ^-^;;