Angelic Organics is relatively expensive as CSAs go -- $27 a week last year, maybe 28 this year -- but for that price you get 3/4 bushel of veg, enough to very easily share if you are just cooking for one or two. The quality of most of the offerings last year was very high, although some things (like the corn) weren't as good as the non-organic corn you can get at the Oak Park Farmers Market or at tons of stands in Wisconsin, etc.
We aren't doing it this year, largely because it felt incredibly wasteful not using everything, and because we're willing to make the trek to the farmers markets.
They've got lots of dropsites, including in Logan. No milk/eggs/meat, though.