I think buying a cel to just turn back around and sell it 
on ebay is wrong, but auctioning a cel off on ebay for 
money isn't wrong, it's a good way to raise money if you
need it, and if people want to pay a lot of money for a cel
I don't have any problem with it. I almost paid 200 bucks
for a cel of Anubis on ebay a while back because I wanted
it, even though I KNOW they didn't pay that much for it.
I would have actually felt kind of nice about it because
I know this person got a little money out if it and I got
a nice cel. So in conclusion, I don't see anything wrong
with auctioning cels as long as they were a part of your 
collection and not just a product you bought and sold. Cels
are to be enjoyed, not to be treated as a commodity.

valerie
got a hundred dollars for a Miyazaki cel she bought for $45
in an ebay auction