It probably has to do with two things, and I'm guessing:
The PhotoCD is standardized at 35mm and there is probably an economy of
scale in production of the standalone equipment that does this. For
larger film sizes you move away from these two "standards", and their
economies of scale.
People shooting larger film sizes are probably going to either be able
to, or are in business and can afford to, spend more money. Charge what
the market will bear!
-- \ Dwight Shackelford *=====*=====*=====*=====*=====*=====*=====* =8{:) e-mule from Jack Ass-cii *=====*=====*=====*=====*=====*=====* \ Visit my web page: http://www.hooked.net/~bubbha/whatsama.htm *=====*=====*=====*=====*=====**=====*=====*=====*=====*=====*=====*