Peapod doesn’t always have the items ordered in stock. In their defense, it’s uncommon in my experience, but it happens. They list these items at the top of every receipt so they’re easy to find.

From my last receipt:

“Out of Stock
The Bake Shop Muffins Blueberry Mini – 12 ct ($0.00)
The Bake Shop Muffins Chocolate Chip Mini – 12 ct
Substituted The Bake Shop Muffins Blueberry Mini – 12 ct”

While technically still accurate, it doesn’t instill me with a lot of confidence.