Where can I find Mega burger bun in Schröcken?

Mega burger bun can also be found in these cities:

Andelsbuch Au Bizau Dalaas Damüls Egg Innerbraz Lech Mellau Neufeld an der Leitha Oberstdorf Riezlern Sankt Anton am Arlberg Schnepfau Schruns Schwarzenberg Silbertal Vandans Warth

You can also find this in Schröcken:

Cornstarch Spread Sweet Ice Cream Rice Dishes Instant Iced Coffee Pretzel Cookies Canned Vegetables Margarine Sparkling Wine Alcoholic Mixed Drinks