diff --git a/public/typo3conf/ext/ep_products/Classes/Domain/Model/GroupsPriceConfig.php b/public/typo3conf/ext/ep_products/Classes/Domain/Model/GroupsPriceConfig.php
index 4a59d058..4f9cd902 100644
--- a/public/typo3conf/ext/ep_products/Classes/Domain/Model/GroupsPriceConfig.php
+++ b/public/typo3conf/ext/ep_products/Classes/Domain/Model/GroupsPriceConfig.php
@@ -143,7 +143,7 @@ class GroupsPriceConfig extends AbstractEntity implements \JsonSerializable
     /**
      * @return float
      */
-    public function getPriceAdditionalPerson(): float
+    public function getPriceAdditionalPerson(): ?float
     {
         return $this->priceAdditionalPerson;
     }
@@ -159,7 +159,7 @@ class GroupsPriceConfig extends AbstractEntity implements \JsonSerializable
     /**
      * @return float
      */
-    public function getPriceAdditionalPersonGroup1(): float
+    public function getPriceAdditionalPersonGroup1(): ?float
     {
         return $this->priceAdditionalPersonGroup1;
     }
@@ -175,7 +175,7 @@ class GroupsPriceConfig extends AbstractEntity implements \JsonSerializable
     /**
      * @return float
      */
-    public function getPriceAdditionalPersonGroup2(): float
+    public function getPriceAdditionalPersonGroup2(): ?float
     {
         return $this->priceAdditionalPersonGroup2;
     }
@@ -191,7 +191,7 @@ class GroupsPriceConfig extends AbstractEntity implements \JsonSerializable
     /**
      * @return float
      */
-    public function getPriceAdditionalPersonGroup3(): float
+    public function getPriceAdditionalPersonGroup3(): ?float
     {
         return $this->priceAdditionalPersonGroup3;
     }
diff --git a/public/typo3conf/ext/ep_theme/Resources/Private/Assets/js/components/GroupsPriceCalculator.vue b/public/typo3conf/ext/ep_theme/Resources/Private/Assets/js/components/GroupsPriceCalculator.vue
index 6ce0ede4..b65c2023 100644
--- a/public/typo3conf/ext/ep_theme/Resources/Private/Assets/js/components/GroupsPriceCalculator.vue
+++ b/public/typo3conf/ext/ep_theme/Resources/Private/Assets/js/components/GroupsPriceCalculator.vue
@@ -36,13 +36,13 @@
         </div>
         <div class="form-group" v-show="boards.length > 0 && !submitted">
             <label>Optionale Verpflegungsleistungen</label>
-            <select class="form-control" v-model="selectedBoard" v-if="selectedPax >= 30">
+            <select class="form-control" v-model="selectedBoard" v-if="totalPax >= 30">
                 <option :value="null">Keine Auswahl</option>
                 <option v-for="board of boards" :value="board" :key="board.uid">{{ board.title }}
                     ({{ formatCurrency(board.price) }} pro Person und Nacht)
                 </option>
             </select>
-            <div v-show="selectedPax < 30">
+            <div v-show="totalPax < 30">
                 <span class="label label-warning">Erst ab 30 Personen buchbar.</span>
             </div>
         </div>
@@ -170,7 +170,20 @@ export default {
         options: {
             type: Array,
             required: true
-        }
+        },
+        runningCostsFactor: {
+            type: Number,
+            default: 1.7,
+        },
+        shortTermFactors: {
+            type: Object,
+            default() {
+                return {
+                    2: 0.2,
+                    3: 0.1,
+                }
+            }
+        },
     },
     data() {
         return {
@@ -239,7 +252,7 @@ export default {
             this.selectedRange = range;
         },
         onPaxUpdated() {
-            if (this.selectedPax < 30) {
+            if (this.totalPax < 30) {
                 this.selectedBoard = null;
             }
         },
@@ -371,11 +384,10 @@ export default {
         priceShortTerm() {
             let price = 0;
             const totalPricePax = (this.pricePax.base + this.pricePax.additional);
-            if (2 === this.nightsCount) {
-                price = totalPricePax * 0.2;
-            }
-            if (3 === this.nightsCount) {
-                price = totalPricePax * 0.1;
+            for (let [nights, factor] of Object.entries(this.shortTermFactors)) {
+                if (nights === this.nightsCount) {
+                    price = totalPricePax * factor;
+                }
             }
             return price;
         },
@@ -383,7 +395,7 @@ export default {
             if (this.selectedBoard) {
                 return 0;
             }
-            return this.nightsCount * this.totalPax * 1.7;
+            return this.nightsCount * this.totalPax * this.runningCostsFactor;
         },
         priceTotal() {
             return this.pricePax.base + this.pricePax.additional + this.priceOptions