diff --git a/modules/ppcp-button/resources/js/button.js b/modules/ppcp-button/resources/js/button.js
index f766cc6ed..0f5d573ce 100644
--- a/modules/ppcp-button/resources/js/button.js
+++ b/modules/ppcp-button/resources/js/button.js
@@ -241,7 +241,6 @@ document.addEventListener(
         if (!typeof (PayPalCommerceGateway)) {
             console.error('PayPal button could not be configured.');
             return;
-            return;
         }
 
         if (
diff --git a/modules/ppcp-button/resources/js/modules/ContextBootstrap/SingleProductBootstap.js b/modules/ppcp-button/resources/js/modules/ContextBootstrap/SingleProductBootstap.js
index c9978306e..41c722465 100644
--- a/modules/ppcp-button/resources/js/modules/ContextBootstrap/SingleProductBootstap.js
+++ b/modules/ppcp-button/resources/js/modules/ContextBootstrap/SingleProductBootstap.js
@@ -4,9 +4,8 @@ import {hide, show} from "../Helper/Hiding";
 import BootstrapHelper from "../Helper/BootstrapHelper";
 import {loadPaypalJsScript} from "../Helper/ScriptLoading";
 import {getPlanIdFromVariation} from "../Helper/Subscriptions"
-import SimulateCart from "../Helper/SimulateCart";
-import {strRemoveWord, strAddWord, throttle} from "../Helper/Utils";
-import merge from "deepmerge";
+import {throttle} from "../Helper/Utils";
+import CartSimulator from "../Helper/CartSimulator";
 
 class SingleProductBootstap {
     constructor(gateway, renderer, errorHandler) {
@@ -217,71 +216,7 @@ class SingleProductBootstap {
     }
 
     simulateCart() {
-        if (!this.gateway.simulate_cart.enabled) {
-            return;
-        }
-
-        const actionHandler = new SingleProductActionHandler(
-            null,
-            null,
-            this.form(),
-            this.errorHandler,
-        );
-
-        const hasSubscriptions = PayPalCommerceGateway.data_client_id.has_subscriptions
-            && PayPalCommerceGateway.data_client_id.paypal_subscriptions_enabled;
-
-        const products = hasSubscriptions
-            ? actionHandler.getSubscriptionProducts()
-            : actionHandler.getProducts();
-
-        (new SimulateCart(
-            this.gateway.ajax.simulate_cart.endpoint,
-            this.gateway.ajax.simulate_cart.nonce,
-        )).simulate((data) => {
-
-            jQuery(document.body).trigger('ppcp_product_total_updated', [data.total]);
-
-            let newData = {};
-            if (typeof data.button.is_disabled === 'boolean') {
-                newData = merge(newData, {button: {is_disabled: data.button.is_disabled}});
-            }
-            if (typeof data.messages.is_hidden === 'boolean') {
-                newData = merge(newData, {messages: {is_hidden: data.messages.is_hidden}});
-            }
-            if (newData) {
-                BootstrapHelper.updateScriptData(this, newData);
-            }
-
-            if ( this.gateway.single_product_buttons_enabled !== '1' ) {
-                return;
-            }
-
-            let enableFunding = this.gateway.url_params['enable-funding'];
-            let disableFunding = this.gateway.url_params['disable-funding'];
-
-            for (const [fundingSource, funding] of Object.entries(data.funding)) {
-                if (funding.enabled === true) {
-                    enableFunding = strAddWord(enableFunding, fundingSource);
-                    disableFunding = strRemoveWord(disableFunding, fundingSource);
-                } else if (funding.enabled === false) {
-                    enableFunding = strRemoveWord(enableFunding, fundingSource);
-                    disableFunding = strAddWord(disableFunding, fundingSource);
-                }
-            }
-
-            if (
-                (enableFunding !== this.gateway.url_params['enable-funding']) ||
-                (disableFunding !== this.gateway.url_params['disable-funding'])
-            ) {
-                this.gateway.url_params['enable-funding'] = enableFunding;
-                this.gateway.url_params['disable-funding'] = disableFunding;
-                jQuery(this.gateway.button.wrapper).trigger('ppcp-reload-buttons');
-            }
-
-            this.handleButtonStatus(false);
-
-        }, products);
+        (new CartSimulator(this)).simulate();
     }
 }
 
diff --git a/modules/ppcp-button/resources/js/modules/Helper/CartSimulator.js b/modules/ppcp-button/resources/js/modules/Helper/CartSimulator.js
new file mode 100644
index 000000000..24c5f8fa5
--- /dev/null
+++ b/modules/ppcp-button/resources/js/modules/Helper/CartSimulator.js
@@ -0,0 +1,95 @@
+import SingleProductActionHandler from "../ActionHandler/SingleProductActionHandler";
+import SimulateCart from "./SimulateCart";
+import BootstrapHelper from "./BootstrapHelper";
+import {strAddWord, strRemoveWord} from "./Utils";
+import merge from "deepmerge";
+
+class CartSimulator {
+
+    constructor(bootstrap) {
+        this.bootstrap = bootstrap;
+    }
+
+    /**
+     * @return
+     */
+    simulate() {
+        const gatewaySettings = this.bootstrap.gateway;
+
+        if (!gatewaySettings.simulate_cart.enabled) {
+            return;
+        }
+
+        const actionHandler = new SingleProductActionHandler(
+            null,
+            null,
+            this.bootstrap.form(),
+            this.bootstrap.errorHandler,
+        );
+
+        const hasSubscriptions = PayPalCommerceGateway.data_client_id.has_subscriptions
+            && PayPalCommerceGateway.data_client_id.paypal_subscriptions_enabled;
+
+        const products = hasSubscriptions
+            ? actionHandler.getSubscriptionProducts()
+            : actionHandler.getProducts();
+
+        (new SimulateCart(
+            gatewaySettings.ajax.simulate_cart.endpoint,
+            gatewaySettings.ajax.simulate_cart.nonce,
+        )).simulate((data) => {
+
+            // Trigger event with simulated total.
+            jQuery(document.body).trigger('ppcp_product_total_updated', [data.total]);
+
+            // Hide and show fields.
+            let newData = {};
+            if (typeof data.button.is_disabled === 'boolean') {
+                newData = merge(newData, {button: {is_disabled: data.button.is_disabled}});
+            }
+            if (typeof data.messages.is_hidden === 'boolean') {
+                newData = merge(newData, {messages: {is_hidden: data.messages.is_hidden}});
+            }
+            if (newData) {
+                BootstrapHelper.updateScriptData(this.bootstrap, newData);
+            }
+
+            // Check if single product buttons enabled.
+            if ( gatewaySettings.single_product_buttons_enabled !== '1' ) {
+                return;
+            }
+
+            // Update funding sources.
+            let enableFunding = gatewaySettings.url_params['enable-funding'] || '';
+            let enableFundingBefore = enableFunding;
+
+            let disableFunding = gatewaySettings.url_params['disable-funding'] || '';
+            let disableFundingBefore = disableFunding;
+
+            for (const [fundingSource, funding] of Object.entries(data.funding)) {
+                if (funding.enabled === true) {
+                    enableFunding = strAddWord(enableFunding, fundingSource);
+                    disableFunding = strRemoveWord(disableFunding, fundingSource);
+                } else if (funding.enabled === false) {
+                    enableFunding = strRemoveWord(enableFunding, fundingSource);
+                    disableFunding = strAddWord(disableFunding, fundingSource);
+                }
+            }
+
+            // Detect and update funding changes and reload buttons.
+            if (
+                (enableFunding !== enableFundingBefore) ||
+                (disableFunding !== disableFundingBefore)
+            ) {
+                gatewaySettings.url_params['enable-funding'] = enableFunding;
+                gatewaySettings.url_params['disable-funding'] = disableFunding;
+                jQuery(gatewaySettings.button.wrapper).trigger('ppcp-reload-buttons');
+            }
+
+            this.bootstrap.handleButtonStatus(false);
+
+        }, products);
+    }
+}
+
+export default CartSimulator;