Wouldn't take much! Film and developing isn't that cheap, but I guess you can develop your own b&w film easily enought at home, so that would save some cash. Certainly with me, scanning and post-processing (clone-stamping out dust, hair and scratches, colour correction, etc.) in LR & PS can take ages and that's another invisible cost - largely as I get obsessive about technicalities. I've been going back over old negs today and bizarrely, some of the ancient scans I made in 2009 are sharper and crisper than the ones I made today, despite it all being on the same hardware. Shit like that will take ages to sort out... Main reasons I like film is the random and somewhat unpredictable nature of it, particularly with cheap/toy/Lomo cameras. Digital for precision, film for "artistic" randomness, or at least that's it for me anyway.