Well well, finally the post office sent me an 
bent package, too. I really ask myself how they 
did it, it was really well packed...

Mmmh, I checked the cel, and I don't know how the 
value is lowered now.
It's IMHO not worse. There's no damage to the 
picture, the colour isn't damaged either.
The cel layer isn't broken, but you see a "wave" 
where it was bent.
How does this lower the value? I love this cel, 
so there's no problem, I wouldn't sell it, but 
I'm interested how much this would lower the 
value.

Thanks for your help!