Is it easy enough to get the film developed for them still?
I used to do it myself but don't have the equipment anymore.
35mm is easy enough it can still be done on the high street but medium format might be trickier............it was over £10 for 12 to 15 prints 'back in the day' that's why I sold my Mamiya to a mate..... Lubitel is in the loft somewhere
i get mine done by Lomo. they have a lab close to work, alas, it's moving. they are used to 'interesting' film formats and strange exposures. they also scan the negatives and email/dropbox the files. very handy. they charge £8 for standard 35mm, £9 for 120 and £10 for 35mm with sprocket holes/panoramic shots. B&W is £2 extra. that is for processing and scanning. not cheap, but they are good, especially with the DIY camera where the shots tend to overlap and the exposure can be quite diverse from shot to shot.
there are still a few film labs around - the Lomo site has a list of labs they recommend on their site.
i may start to do my own B&W - as i'll just be processing the film and not printing i don't need a darkroom. i can then scan the negs.
the Lomo Lab do a post service too, so i'll probably have to use that now the actual lab is heading further to east london.