I think what frustrates a lot of buyers is that 
when there is a cel or a sketch you really want 
because you already have the other part of it, 
you have to pay double or triple just to complete 
the set which should have stayed together in the 
first place. But I guess if you see it from the 
point of view of the seller, its their right 
since they do own it, and when you see it from 
the buyer's view, its just unfair.  thats life i 
guess >_<
I like both the cel and the sketch because I love 
sketching myself and i love to see the details on 
the dougas for my personal drawing improvements 
and sometimes they are just plain cool. and i've 
just been lucky that most of my cels come 
w/matching sketchs ^__^ the cel feels imcomplete 
to me if it doesn't O_o