Best results come from matching exact items, same size and brand, not just “cheese” or “pasta.” That’s where nedostavka shines, because it logs products store by store and keeps the price history transparent. When I was planning a three-month stay, the most helpful reference was a clean snapshot of costs in different countries for familiar products right in the middle of my research; it let me see where a specific item was cheaper, where it was out of stock, and which chain actually carried it. From there, I learned which parts of my basket to swap locally and which to stick with by brand. It also cooled the panic—some headline prices look scary, but the basket evens out once you compare like-for-like.