some people have a big affinity for dougas and 
gengas. sometimes when I've sold cels I've gotten 
bombarded with particular questions about the 
state of the sketch rather than the cel itself. I 
personally have paid large amounts for both douga 
and genga because they show the process of making 
the cel, and I love experiencing that. if you 
don't much care for them, you shouldn't pay the 
big bucks for a rare sketch.

/Mina