I think that's a good point, I mean everyone 
resells, or buys from someone and then resells.  
In fact, really the only person who doesnt would 
be the original artist...
as an animation artist myself, even I get flack 
for selling my OWN original artwork, so even the 
artists arent safe from heckling for "selling out" 
their work.

it really is just due to your perspective, and 
what you have access to.

alot of people only shop on ebay. they are not 
aware of other cel shops.  to them, someone 
selling on ebay is offering them something they 
never could have gotten before.  to them, they 
like this seller. but some of us may see it as 
"wrong" becuase we've seen that cel before on 
another site for less money than it went on ebay.

its not "wrong". maybe we dont like it. but the 
fact is that it is THEIR cel and they can sell it 
for however much they want.  obviously, I'll be 
much less likely to respect and buy from someone 
who regularly does this, or buys cels expressly 
for the purpose of reselling, becuase like its 
been said... those people are buying cels that I 
could have bought myself first... but then 
again... they did get their first, and they have 
every right to sell it if they want.
(I just wont like them for it).