Hello Everyone!

What was the original price that this Aya Opening
cel sold for on animegame.com?


I found a gorgeous Aya cel on someone's cel
gallery and they have offered to sell it to me. 
Only problem is that I have NO IDEA what to offer
them!  It looks similar to this one only his eyes
are more open and he comes with the matching
background (not sure if it is painted or copied).
 What would be a fair price to offer them?  I have
never purchased a Weiss Kreuz cel before and don't
know what their going prices are.  Thanks.

JC