If your goal is rock-bottom prices on everyday staples (like bottled water, eggs, milk, pasta, and trash bags), look for the "Big Three" Turkish discount brands.
You will find small, no-frills neighborhood versions of these scattered right along or just off the main D400 highway in Incekum and neighboring Avsallar.
BİM: The undisputed king of budget shopping in Turkey.
BİM operates on a "wholesale price for retail" model.
You won't see fancy displays or many recognizable international brands here; instead, the shelves are packed with high-quality private-label goods. Their dairy, rice, and pantry staples offer the absolute best price-to-quality ratio.
A101: BİM’s fiercest competitor. A101 operates on the same low-cost blueprint but generally stocks a slightly wider variety of goods, occasionally mixed with discounted name brands and small household electronics.
Şok (pronounced Shok): Matches BİM and A101 on basic pantry prices, but Şok frequently boasts slightly better, fresher, and more consistent fruit and vegetable sections than the other two discounters.
Crucial Budget Note: To keep costs low and adhere to specific corporate policies, none of the "Big Three" hard discounters (BİM, A101, or Şok) sell alcohol or tobacco products.