I can't tell what your price range is, but I know 
there's one of Shinji's Eva for $400 on Mangaya.  
I'm not saying that's cheap, but it's a hell of a 
lot better than I what I've seen on some sites.

And I have to add that I'm absolutely shocked 
that the opening cel they have for sale is under 
$2000.  I mean, hell, I've seen cels of Misato 
alone that sell for more than that.  I'm, 
personally, impressed.  ^_^

-Chao-chan