Where to buy groceries and sweets at reasonable prices in Fatih, Istanbul?

There's a street market near the Haseki Mosque in Fatih (open on Fridays) with a nice atmosphere and good prices — good olives were bought there. Worth looking for similar local markets on other days too.

The Show supermarket near Çemberlitaş tram stop has reasonable prices comparable to a standard European grocery store. Good selection of cheeses, baklava sold by weight, and gift chocolates. Foreign bank cards (including some Russian ones) were accepted without issues.

Some shops in Fatih, especially near major mosques and tourist attractions, charge inflated prices. For everyday items like drinks, cheese, and snacks, it's better to seek out chain supermarkets rather than small convenience stores near sights.