I have had the same thing happen to me- the first 
time was for a cel that cost me more than I had 
ever spent on a cel $200 - and it was a Tamahome 
TV cel, which I had been wanting forever.  I felt 
bad about spending so much, and the cel was cool 
but it just wasn't "it" for me.  
I ended up selling it to a very loving home, and 
I'm glad I did.  
On the other hand, I got two cels I had been 
waiting awhile for on one day, and I felt 
disappointed in one from paint damage, and 
disappointed in the other because the seller's 
scan showed the colors more vibrantly than they 
appeared on the cel.
But a few days later, I realized I really really 
loved the expression of the character with 
paintspots missing, and against a piece of paper 
they didn't seem too bad. 
And as for the other cel, it looked a little 
brighter.  
So, I think it goes both ways.