In terms of ingredients it’s super cheap. I make sourdough, so it’s just the cost of flour and salt. Back of envelope math tells me the electricity is probably less than C$1 even if I preheat a stone for an hour and bake a single loaf.
It takes enough time that it all depends on how you value your time. It’s probably something like 30m of work spread out over a couple of days in a bunch of steps. I find it (mostly) relaxing, and it fits into my routine, so I don’t really worry about the time. If I wanted to save time that badly I could drink instant coffee, get rid of all my houseplants, etc.
I’m in Canada, and I sent a cbc.ca news link to someone in instagram chat. It showed a preview of the post with a picture and summary, but when the link was clicked it went to a page that said: