diff --git a/src/Helper/ProductVariantPriceHelper.php b/src/Helper/ProductVariantPriceHelper.php
index 2a4b90c..2228247 100644
--- a/src/Helper/ProductVariantPriceHelper.php
+++ b/src/Helper/ProductVariantPriceHelper.php
@@ -8,7 +8,7 @@
 use Sylius\Component\Core\Calculator\ProductVariantPricesCalculatorInterface;
 use Sylius\Component\Core\Model\ProductVariantInterface;
 
-final class ProductVariantPriceHelper
+final class ProductVariantPriceHelper implements ProductVariantPriceHelperInterface
 {
     private ProductVariantPricesCalculatorInterface $productVariantPricesCalculator;
 
diff --git a/src/Helper/ProductVariantPriceHelperInterface.php b/src/Helper/ProductVariantPriceHelperInterface.php
new file mode 100644
index 0000000..4395701
--- /dev/null
+++ b/src/Helper/ProductVariantPriceHelperInterface.php
@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+namespace StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper;
+
+use Sylius\Component\Core\Model\ProductVariantInterface;
+
+interface ProductVariantPriceHelperInterface
+{
+    public function getProductVariantPrice(
+        ProductVariantInterface $productVariant
+    ): int;
+}
diff --git a/src/TagManager/ViewItem.php b/src/TagManager/ViewItem.php
index d18e8b7..853a43a 100644
--- a/src/TagManager/ViewItem.php
+++ b/src/TagManager/ViewItem.php
@@ -6,7 +6,7 @@
 
 use StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper\GoogleImplementationEnabled;
 use StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper\ProductIdentifierHelper;
-use StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper\ProductVariantPriceHelper;
+use StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper\ProductVariantPriceHelperInterface;
 use Sylius\Component\Channel\Context\ChannelContextInterface;
 use Sylius\Component\Core\Model\ProductInterface;
 use Sylius\Component\Core\Model\TaxonInterface;
@@ -28,7 +28,7 @@ final class ViewItem implements ViewItemInterface
 
     private GoogleImplementationEnabled $googleImplementationEnabled;
 
-    private ProductVariantPriceHelper $productVariantPriceHelper;
+    private ProductVariantPriceHelperInterface $productVariantPriceHelper;
 
     public function __construct(
         GoogleTagManagerInterface $googleTagManager,
@@ -36,7 +36,7 @@ public function __construct(
         CurrencyContextInterface $currencyContext,
         ProductIdentifierHelper $productIdentifierHelper,
         ProductVariantResolverInterface $productVariantResolver,
-        ProductVariantPriceHelper $productVariantPriceHelper,
+        ProductVariantPriceHelperInterface $productVariantPriceHelper,
         GoogleImplementationEnabled $googleImplementationEnabled
     ) {
         $this->googleTagManager = $googleTagManager;
diff --git a/src/TagManager/ViewItemList.php b/src/TagManager/ViewItemList.php
index fda6727..295e594 100644
--- a/src/TagManager/ViewItemList.php
+++ b/src/TagManager/ViewItemList.php
@@ -7,7 +7,7 @@
 use Doctrine\Common\Collections\ArrayCollection;
 use StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper\GoogleImplementationEnabled;
 use StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper\ProductIdentifierHelper;
-use StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper\ProductVariantPriceHelper;
+use StefanDoorn\SyliusGtmEnhancedEcommercePlugin\Helper\ProductVariantPriceHelperInterface;
 use Sylius\Component\Channel\Context\ChannelContextInterface;
 use Sylius\Component\Core\Model\ProductInterface;
 use Sylius\Component\Core\Model\TaxonInterface;
@@ -32,7 +32,7 @@ final class ViewItemList implements ViewItemListInterface
 
     private GoogleImplementationEnabled $googleImplementationEnabled;
 
-    private ProductVariantPriceHelper $productVariantPriceHelper;
+    private ProductVariantPriceHelperInterface $productVariantPriceHelper;
 
     public function __construct(
         GoogleTagManagerInterface $googleTagManager,
@@ -41,7 +41,7 @@ public function __construct(
         LocaleContextInterface $localeContext,
         ProductIdentifierHelper $productIdentifierHelper,
         ProductVariantResolverInterface $productVariantResolver,
-        ProductVariantPriceHelper $productVariantPriceHelper,
+        ProductVariantPriceHelperInterface $productVariantPriceHelper,
         GoogleImplementationEnabled $googleImplementationEnabled
     ) {
         $this->googleTagManager = $googleTagManager;