Grocery Store Mini Cupcakes

Does anyone know what  kind of mini muffin pans the grocery/supermarkets use? I like the size of their mini cupcakes.

I use a mini muffin pan that i purchased from walmart and bed bath and beyond, but mine are a little smaller. The ones in the grocery store (Publix, Walmart) are about the same diameter but they seem to be deeper/taller, but are minis.