there are a few series that I collect, that if I 
make a mistake like you are talking about, I 
must pay dearly.

Video Girl Ai is one of those, in 85% of the 
cases where I've tried to sell a Video Girl cel, 
I've lost money! (even if I'm not asking much!) 
which is so odd becuase they aren't easy to 
find (I look!) and good ones are even harder to 
find.

I had this one shot that I simply didnt know the 
market for, I bought becuase I liked it alot, but 
then later, I ended up finding much better 
shots.

I just barely got half what I paid for it when I 
sold it.
you could say that perhaps I should have kept 
it instead of loose that much money... but at 
that point I felt SO bad about overpaying that I 
would rather have what I COULD get for the 
cel than keep it in my cel book and be upset 
every time I see it.

I know this probably isnt directly related to your 
quandry... but just ask yourself this...

is the cel worth to you the price that you 
COULD get for it? if its worth it to you to keep it 
for that price, then keep it, and just try and 
enjoy it for what it is.
If you'd rather have the money though, 
whatever that sum is, then sell it. I know that 
sounds redundant, but when it comes down it 
it... that's what it kinda is.