diff --git a/landing/package.json b/landing/package.json
index a46c0d43a..67370392e 100644
--- a/landing/package.json
+++ b/landing/package.json
@@ -13,7 +13,7 @@
   "dependencies": {
     "@astrojs/mdx": "^4.3.13",
     "@astrojs/vercel": "^9.0.2",
-    "@polar-sh/sdk": "^0.20.2",
+    "@polar-sh/astro": "^0.7.3",
     "astro": "^5.17.1",
     "shepherd.js": "workspace:*"
   },
diff --git a/landing/src/actions/index.ts b/landing/src/actions/index.ts
deleted file mode 100644
index cda15fc72..000000000
--- a/landing/src/actions/index.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-import { defineAction } from 'astro:actions';
-import { z } from 'astro:schema';
-
-import { Polar } from '@polar-sh/sdk';
-
-const polar = new Polar({
-  accessToken: import.meta.env.POLAR_ACCESS_TOKEN ?? ''
-});
-
-export const server = {
-  checkout: defineAction({
-    input: z.object({
-      productPriceId: z.string()
-    }),
-    handler: async (input) => {
-      const { productPriceId } = input;
-      let result;
-
-      try {
-        result = await polar.checkouts.custom.create({
-          productPriceId,
-          successUrl: 'https://docs.shepherdjs.dev'
-        });
-      } catch (error) {
-        console.error('Checkout error:', error);
-      } finally {
-        if (result?.url) {
-          return result.url;
-        } else {
-          return 'https://shepherdjs.dev';
-        }
-      }
-    }
-  })
-};
diff --git a/landing/src/pages/api/checkout.ts b/landing/src/pages/api/checkout.ts
new file mode 100644
index 000000000..b3335570f
--- /dev/null
+++ b/landing/src/pages/api/checkout.ts
@@ -0,0 +1,8 @@
+import { Checkout } from '@polar-sh/astro';
+
+export const prerender = false;
+
+export const GET = Checkout({
+  accessToken: import.meta.env.POLAR_ACCESS_TOKEN ?? '',
+  successUrl: 'https://docs.shepherdjs.dev'
+});
diff --git a/landing/src/pages/pricing.astro b/landing/src/pages/pricing.astro
index 333ff89ee..eb197ded4 100644
--- a/landing/src/pages/pricing.astro
+++ b/landing/src/pages/pricing.astro
@@ -53,7 +53,7 @@ import { SITE_TITLE, SITE_DESCRIPTION } from '../consts';
                   <button
                     class="button bg-white border-2 border-navy p-6 text-navy whitespace-nowrap w-full"
                     aria-describedby="purchase business license"
-                    data-pricing-id="4d72f490-47e5-4b83-b6e7-5fde0d0ee009"
+                    data-pricing-id="5dea1175-6e19-4613-bf7a-a0ae4354ccf9"
                     type="button"
                   >
                     Purchase
@@ -140,7 +140,7 @@ import { SITE_TITLE, SITE_DESCRIPTION } from '../consts';
                   <button
                     class="button bg-white border-2 border-navy p-6 text-navy whitespace-nowrap w-full"
                     aria-describedby="purchase enterprise license"
-                    data-pricing-id="c27eb1ec-bc59-446e-8aab-6adf920f9962"
+                    data-pricing-id="713b19cd-7fbf-41fb-9bf7-b5c25c318406"
                     type="button"
                   >
                     Purchase
@@ -339,18 +339,50 @@ import { SITE_TITLE, SITE_DESCRIPTION } from '../consts';
 </html>
 
 <script>
-  import { actions } from 'astro:actions';
-  import { navigate } from 'astro:transitions/client';
   document.addEventListener('astro:page-load', () => {
     const buttons = document.querySelectorAll('[data-pricing-id]');
 
+    // Store original button texts
+    const buttonStates = new Map();
+    buttons.forEach((button) => {
+      if (button instanceof HTMLButtonElement) {
+        buttonStates.set(button, button.innerHTML);
+      }
+    });
+
+    // Reset button states when user navigates back
+    const resetButtons = () => {
+      buttons.forEach((button) => {
+        if (button instanceof HTMLButtonElement) {
+          const originalText = buttonStates.get(button);
+          if (originalText) {
+            button.disabled = false;
+            button.innerHTML = originalText;
+          }
+        }
+      });
+    };
+
+    // Listen for page visibility changes (when user comes back from checkout)
+    document.addEventListener('visibilitychange', () => {
+      if (document.visibilityState === 'visible') {
+        resetButtons();
+      }
+    });
+
+    // Also reset on page show event (handles browser back button)
+    window.addEventListener('pageshow', (event) => {
+      // Reset buttons if coming back via browser navigation
+      resetButtons();
+    });
+
     buttons.forEach((button) => {
       button.addEventListener('click', async (event) => {
         if (!(event.target instanceof HTMLButtonElement)) {
           return;
         }
         const btn = event.target;
-        const originalText = btn.innerHTML;
+        const originalText = buttonStates.get(btn);
         btn.disabled = true;
         btn.innerHTML = `
         <span class="inline-flex items-center">
@@ -363,31 +395,17 @@ import { SITE_TITLE, SITE_DESCRIPTION } from '../consts';
         </span>
       `;
 
-        const productPriceId = event.target?.dataset.pricingId;
+        const productId = event.target?.dataset.pricingId;
 
-        if (!productPriceId) {
-          console.warn('No pricing ID found for this button');
+        if (!productId) {
+          console.warn('No product ID found for this button');
+          btn.disabled = false;
+          btn.innerHTML = originalText || '';
           return;
         }
 
-        try {
-          const { data, error } = await actions.checkout({
-            productPriceId
-          });
-
-          console.log('Checkout result:', data, error, productPriceId);
-
-          if (!error) {
-            navigate(data);
-          } else {
-            console.error('Checkout error:', error);
-          }
-        } catch (error) {
-          console.error('An error occurred during checkout:', error);
-        } finally {
-          btn.disabled = false;
-          btn.innerHTML = originalText;
-        }
+        // Use full-page navigation to follow server-side redirect to external Polar checkout
+        window.location.href = `/api/checkout?products=${productId}`;
       });
     });
   });
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 77a7d3ac0..3503e510e 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -99,9 +99,9 @@ importers:
       '@astrojs/vercel':
         specifier: ^9.0.2
         version: 9.0.2(astro@5.17.1(@types/node@25.2.3)(@vercel/functions@2.2.13)(jiti@2.6.1)(lightningcss@1.30.2)(rollup@4.57.1)(terser@5.46.0)(typescript@5.9.3)(yaml@2.8.2))(encoding@0.1.13)(react@19.2.4)(rollup@4.57.1)(svelte@5.49.1)
-      '@polar-sh/sdk':
-        specifier: ^0.20.2
-        version: 0.20.2(zod@3.25.76)
+      '@polar-sh/astro':
+        specifier: ^0.7.3
+        version: 0.7.3(astro@5.17.1(@types/node@25.2.3)(@vercel/functions@2.2.13)(jiti@2.6.1)(lightningcss@1.30.2)(rollup@4.57.1)(terser@5.46.0)(typescript@5.9.3)(yaml@2.8.2))
       astro:
         specifier: ^5.17.1
         version: 5.17.1(@types/node@25.2.3)(@vercel/functions@2.2.13)(jiti@2.6.1)(lightningcss@1.30.2)(rollup@4.57.1)(terser@5.46.0)(typescript@5.9.3)(yaml@2.8.2)
@@ -2061,10 +2061,17 @@ packages:
     resolution: {integrity: sha512-c83qWb22rNRuB0UaVCI0uRPNRr8Z0FWnEIvT47jiHAmOIUHbBOg5XvV7pM5x+rKn9HRpjxquDbXYSXr3fAKFcw==}
     engines: {node: '>=12'}
 
-  '@polar-sh/sdk@0.20.2':
-    resolution: {integrity: sha512-Rrqt2jyg1VhO9Gfy3WpLF9bST5yxXGnNJ1a/vHw/N4CXWZNbafKjKVGI2f7t1emCosvzkT2BpIBf+b19CpUTiw==}
+  '@polar-sh/adapter-utils@0.4.3':
+    resolution: {integrity: sha512-9xjOyaAVWRFaFZKkSdZr8J6i5LToUoFKeoczXCEu6+uxAhKmkjA3Qlc8otI4be1DSouWgrYB/VUGHOW7dIgCuQ==}
+
+  '@polar-sh/astro@0.7.3':
+    resolution: {integrity: sha512-+lDsNSBCn9e4hbjqGtQV1VGIe4d5+/FpyTcvPBnHBfpjlwccZLwktAv8Ec6uZl4OsXBkYuXNta64j+gZOrloxg==}
+    engines: {node: '>=16'}
     peerDependencies:
-      zod: '>= 3'
+      astro: ^5.0.0
+
+  '@polar-sh/sdk@0.42.5':
+    resolution: {integrity: sha512-GzC3/ElCtMO55+KeXwFTANlydZzw5qI3DU/F9vAFIsUKuegSmh+Xu03KCL+ct9/imJOvLUQucYhUSsNKqo2j2Q==}
 
   '@polka/url@1.0.0-next.29':
     resolution: {integrity: sha512-wwQAWhWSuHaag8c4q/KN/vCoeOJYshAIvMQwD4GpSb3OiZklFfvAgmj0VCBBImRpuF/aFgIRzllXlVX93Jevww==}
@@ -10380,7 +10387,17 @@ snapshots:
       '@pnpm/network.ca-file': 1.0.2
       config-chain: 1.1.13
 
-  '@polar-sh/sdk@0.20.2(zod@3.25.76)':
+  '@polar-sh/adapter-utils@0.4.3':
+    dependencies:
+      '@polar-sh/sdk': 0.42.5
+
+  '@polar-sh/astro@0.7.3(astro@5.17.1(@types/node@25.2.3)(@vercel/functions@2.2.13)(jiti@2.6.1)(lightningcss@1.30.2)(rollup@4.57.1)(terser@5.46.0)(typescript@5.9.3)(yaml@2.8.2))':
+    dependencies:
+      '@polar-sh/adapter-utils': 0.4.3
+      '@polar-sh/sdk': 0.42.5
+      astro: 5.17.1(@types/node@25.2.3)(@vercel/functions@2.2.13)(jiti@2.6.1)(lightningcss@1.30.2)(rollup@4.57.1)(terser@5.46.0)(typescript@5.9.3)(yaml@2.8.2)
+
+  '@polar-sh/sdk@0.42.5':
     dependencies:
       standardwebhooks: 1.0.0
       zod: 3.25.76