Where can I find Power bar in Holler?

Power bar can also be found in these cities:

Aarbergen Altendiez Dierdorf Diez Dortmund Hadamar Hundsdorf Koblenz Lahnstein Limburg an der Lahn Montabaur Mudershausen Nassau Röthenbach Urbach Wallmerod (Westerwald) Winden (Rhein-Lahn-Kreis) Wirges

You can also find this in Holler:

Milk Baking Ingredients Beer Jam Vinegar Beef Spices Cocoa Normal Rolls Acid Preserves