fp100c is up to $9 now, i think at the start of the summer it was $7-8ish? its not too bad in comparison to any of the kodak 4x5 black and white films, or the color 4x5 films, which are way more expensive per sheet. When it comes down to it, you dont even have to pay extra for chemicals to process it like the bw films! its already included in the purchase price!
The only thing is the initial cost of the holder, then its clear sailing from there until fuji discontinues the film, knock on wood.