I really don't see a problem about him selling 
the same sequence sketches separtely. That scene 
of Majin Vegita is very very sought out. I mean 
they aren't copies (some people actually were 
selling copies for about $20 each at one time). 
And if I remember right its the same sequence 
everybody was making a fancel of a while back. I 
mean this is the real deal and he should sell 
them how ever he wants.