Your list shows an item under the stores you’ve said sell it. To choose them, open the item, tap the pencil button (Edit), then Stores.

  • Where You Buy It lists the stores that sell it, each with its price and aisle there.
  • Below that, under Other Stores (Your Stores if it has none yet), tap a store to add it. Stores you’ve bought it at before come first, marked You’ve bought this here before.
  • New Store… makes a store and adds it to this item.
  • Swipe a store left to Remove it, or right to Edit Store. A store you remove keeps its price and aisle, with Add Back, until you save.

While you shop, tap an item’s price or amount on your list and choose Add a Store to do the same from there.