I didn't know there was anthing even resembling an "average" price. It's all over the map, depending
on what you specifically need. And personally, I've never found bargain film to end up being a bargain
unless it has exactly the characteristics you need. Large format is especially uneconomical if you
end up wasting shots. But sometimes I have gotten good deals on out-of-date cold-stored film, esp
just for experimenting if the price was tempting enough (that is, cheap enough to actually gamble with). And I'm sure glad my freezer is well stocked with 8x10 film purchased at about half the price
of the going rate at the moment.