Farmer's Markets:
bulk rice
pastured eggs
pastured beef/lamb/goat/bones/organs
fruits and veggies
pastured chicken
mushrooms
Small local butcher (I don't love their selection, and often buy meat at the locally owned grocery store instead. not enough high quality):
ground lamb
free range organic chicken
free range organic chicken liver
small locally owned cheeseshop:
various types of cheeses
small locally owned market focusing on produce:
seasonal produce
raisins
on sale olive oil
bananas
small local natural food store:
mostly grass-fed non homogenized pasturized (

) milk and cream
same as above yogurt
same as above butter (primarily winter)
locally owned supermarket/that sort of leans towards the hfs side:
local pastured beef
free range organic chickens
pastured cultured butter (summer only)
bulk grains/legumes
spices
coconut oil
peanut butter
olive oil
flours
steel cut oats
sparkling grape juice (it's much cheaper than wine for shabbat, and tastes really nice. it's made from wine grapes)
work (aka CSK):
pastured eggs
cod liver oil
celtic sea salt
occasionally sprouted flour (don't use it much, it's horribly expensive)
local homebrew shop:
store made red and white wine vinegar
occasionally:
asian fish market:
seaweed
soy sauce/sesame seed oil
sashimi "trim" for tuna tartar
small local fish market:
other fish
local bakeries:
sourdough or other artisan bread
Holy crud. and I'm still looking to source a few things? my goodness! we shop a lot of places. we don't go to all these places every week, however our weekly grocery loops includes at a minimum 4 stores (2 on the same block, and a third 4 blocks away) plus the farmers market. The four stores we hit one right after another, one trip a week, the farmers market when we want/feel like it/need to. For fish we'll make a separate trip the day we're going to eat it. Plus what I pick up at work.
I don't coupon shop, but we're very aware of what costs the least where, as we're on a tight budget, and want to make every penny count. Since a lot of the stores we shop are right next to each other, several within walking distance of each other, it doesn't cost us more gas to go to more places.
(and we also go a few other places for a few random things. the middle eastern market for spices, a few other middle eastern foods, the mexican grocery for meat for the cat and lime, herb shop for apple cider vinegar, etc.)