if you think that it's just a piece of plastic 
that's why you think it's crazy to pay 4g for a 
mononoke cel,but in the contrary you think it's 
an actual piece of art from the legendary 
mononoke hime film that piece of plastic was 
filmed to recreate one of the most epic history 
of the anime and you have the money to have this 
litle piece as a memorobilia because the 
wonderfull moments that you had seeing this 
excellent film , and when you see the actual 
frame that you own it worth the price,that's why 
so many people collect cels to have something 
that had been part of their favorite anime and 
have some part of history in his own hands,and 
not to stack a bunch of plastic pieces, cels are 
ART