I agree that the set price is ridiculous if what he paid was 
a mere fraction of it. It's one thing to sell at a price to
try to break even, but entirely another to sell at over four
times the retail price - on an auction, no less.

I don't mind if people want to make a little profit off their 
personal sales, that's their right. I certainly don't mind 
when a legit business tries to make a profit. But everything 
is relative! This guy is also selling a 'child Lum' for 100 - 
and someone bid! Well, their loss. (Not a good cel, either.) 
If you look at EBay's history, the highest price a Lum cel 
ever sold for was less than $30 (yes, for poorer B-C grade 
cels). This is more about being a jerk than it is about 
legality, of course. 

Caveat emptor.