One thing perhaps you should all check is that bundled items are not charged more than once. eg. We bought some Iced tea 2 bottle bundles that were basically buy 2 & get the 2nd bottle in the bundle free. When we got home we realised that each bottle had been scanned. That was in Tansas. In Migros & Carrefour they were scanned correctly.
Shame about Gima turning into a Carrefour. Their own label isn't as good - on washing up liquid, lemon spray & on their Deli. Gima italian Salad was scrummy but the Carrefour is cr.p.
We found now that Tansas is usually less expensive than Gima which is less expensive than Migros. Although we also found that some of the Gunlukbasi shops offer the best buys.