Where can I find Power bar in Gappenach?

Power bar can also be found in these cities:

Andernach Boppard Cochem Kobern-Gondorf Koblenz Lahnstein Mülheim-Kärlich Münstermaifeld Neuwied Nickenich Plaidt Treis-Karden Waldesch Weißenthurm

You can also find this in Gappenach:

Desserts Dessert Baking Mixes Cake Glaze Peanut Butter Ice Cream Rice Dishes Vegetable Juices Instant Iced Coffee Cheese Roll Canned Fish