My PM beers run around $0.80 each (12 ounces, so $1 per pint, neglecting sediment losses).
Typically it's something like 3 pounds DME at $4/pound, 6 pounds of grain at around $1.50 a pound, about $4 for water if I'm not using tap, $3 or so for hops, $5-$10 for yeast (including the starter costs if needed), and a buck or two for nutrients and miscellaneous. That works out to $35-$40 for a 5 gallon batch, which typically gets me 50 bottles.
This is ignoring bottling costs since I usually reuse bottles, as well as cleaners and sanitizers. I figure those probably add a couple bucks a batch on average in the long term. For planning purposes, I assume it's about $1 a bottle.
Ignoring equipment costs, I probably come out a bit ahead. I have not increased my consumption at all, it's pretty much always been one beer per day for the last few years. When I buy beer, I usually stick to fairly mass market stuff (Sam Adams, Guinness, etc) and can usually find something on sale for ~$12-$15 for a 12-pack. So I'm not saving much if anything, but I'm not losing either.