diff --git a/Shop/resources/quellen.txt b/Shop/resources/quellen.txt
index b7181b5..31b18fb 100644
--- a/Shop/resources/quellen.txt
+++ b/Shop/resources/quellen.txt
@@ -19,3 +19,5 @@ https://www.youtube.com/watch?v=eHjbvgw4hsI
 Baeldung - ConcurrentModificationException
 https://www.baeldung.com/java-concurrentmodificationexception
 
+Build an Online Shopping Cart System Using OOP in Java - Nakul Mitra
+https://towardsdev.com/build-an-online-shopping-cart-system-using-oop-in-java-e8e5797f8664
\ No newline at end of file
diff --git a/Shop/src/de/th_mannheim/informatik/main/java/shop/backend/Cart.java b/Shop/src/de/th_mannheim/informatik/main/java/shop/backend/Cart.java
index f04bc7c..2c85252 100644
--- a/Shop/src/de/th_mannheim/informatik/main/java/shop/backend/Cart.java
+++ b/Shop/src/de/th_mannheim/informatik/main/java/shop/backend/Cart.java
@@ -4,7 +4,10 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class Cart {
-
+/*
+Ich hätte auch über eine ProdukteListe Iterieren können,
+jedoch würde dann die Klasse CartPositions wegfallen
+ */
 private List<CartPosition> positions;
 
 public Cart(){
@@ -38,6 +41,15 @@ public void removeProduct(int productID){
     }
 }
 
+    public double getTotalPrice() {
+        double sum = 0;
+        for(CartPosition pos : positions){
+            sum += pos.getTotalPrice();
+        }
+        return sum;
+    }
+
+
 
 
 }