I also believe that this film should be preserved.  Having done my TCP on A Clockwork Orange, I too had to address the question of "Is it worth it?"  I have never seen Pi but have heard nothing but stellar reviews.  As a society, we are always trying to do more, know more, and be bigger.  Many don't realize that it comes at a price to ourselves and those around us.  My question for you is this - What do you think?  Do you think the price is worth it?  Do the ends justify the means?  Or vice versa?