Where can I find Mega burger bun in Zellberg?

Mega burger bun can also be found in these cities:

Alpbach Finkenberg Fügen Gerlos Jenbach Königsleiten Mayrhofen Pill Praa Schlitters Schwaz Tux Uderns Umlberg Zell am Ziller

You can also find this in Zellberg:

Baked Goods Pumpernickel Breakfast Cereals Pies Cola Food Flips Food Supplements Delicatessen Sauces Raisin Slices