Do you have a description of it?  Nothing is 
showing.  I have printouts of some of the older 
animegame weiss pages (I call them my should-I 
sheets!)

Summer_queen is so right.  Op cels go for much 
more.  But in general, the cost of a WK cel 
depends on how good that particular cel was 
drawn, and whether or not you're involved in a 
(possibly slow-motion) bidding war at the moment. 
(Waves to opponents...) 

My own animegame OP extravagance below -