diff --git a/superpage/src/components/Course/BuyDropdown.astro b/superpage/src/components/Course/BuyDropdown.astro
new file mode 100644
index 0000000..338db73
--- /dev/null
+++ b/superpage/src/components/Course/BuyDropdown.astro
@@ -0,0 +1,12 @@
+<details class:list={["group relative group", Astro.props.class]}>
+    <summary
+        class="flex bg-black hover:bg-white hover:text-black group-open:text-black group-open:bg-white font-semibold py-2.5 px-3 rounded-md cursor-pointer transition"
+    >
+        <slot name="label" />
+    </summary>
+    <div
+        class="absolute right-0 top-full translate-y-1 bg-stone-900 p-2.5 border border-white/15 min-w-56 rounded-lg shadow drop-shadow"
+    >
+        <slot />
+    </div>
+</details>
diff --git a/superpage/src/components/Course/Course.astro b/superpage/src/components/Course/Course.astro
index 1deb6ff..c41587a 100644
--- a/superpage/src/components/Course/Course.astro
+++ b/superpage/src/components/Course/Course.astro
@@ -1,4 +1,8 @@
 ---
+export type Props = {
+    trainer?: string;
+};
+
 import Clients from "../Clients.astro";
 import Modules from "./Modules.astro";
 import Features from "../Features.astro";
diff --git a/superpage/src/components/Course/HeaderNav.astro b/superpage/src/components/Course/HeaderNav.astro
index 8eaa7ba..c9b8e4f 100644
--- a/superpage/src/components/Course/HeaderNav.astro
+++ b/superpage/src/components/Course/HeaderNav.astro
@@ -1,6 +1,7 @@
 ---
 import { Icon } from "astro-icon/components";
 import Container from "../Container.astro";
+import BuyDropdown from "./BuyDropdown.astro";
 
 import { getCollection } from "astro:content";
 const courses = await getCollection(
@@ -24,12 +25,12 @@ const { title } = Astro.props;
             <Icon name="chevron-down" aria-hidden="true" class="size-4 mt-1" />
         </button>
 
-        <button
-            type="button"
-            class="bg-black hover:bg-white hover:text-black font-semibold py-2.5 px-3 rounded-md cursor-pointer ml-auto transition"
-        >
-            Contratar agora
-        </button>
+        <BuyDropdown class="ml-auto">
+            <Fragment slot="label">Contratar agora</Fragment>
+            <ul>
+                <li>...</li>
+            </ul>
+        </BuyDropdown>
     </Container>
 
     <dialog
diff --git a/superpage/src/components/Course/_bkp.astro b/superpage/src/components/Course/_bkp.astro
new file mode 100644
index 0000000..308baa9
--- /dev/null
+++ b/superpage/src/components/Course/_bkp.astro
@@ -0,0 +1,155 @@
+---
+import { Icon } from "astro-icon/components";
+import Container from "../Container.astro";
+
+import { getCollection } from "astro:content";
+const courses = await getCollection(
+    "courses",
+    ({ data }) => data.draft != true,
+);
+
+const { title } = Astro.props;
+---
+
+<nav
+    class="bg-lime-400 sticky top-0 z-10 py-3 drop-shadow shadow-sm"
+    x-data="{ open: false }"
+    x-on:keydown.esc.prevent.stop="open = false"
+    x-effect="document.body.classList.toggle('overflow-hidden', open)"
+>
+    <Container class="flex items-center">
+        <button
+            class="text-black font-medium cursor-pointer lg:bg-white/15 hover:outline lg:border border-black lg:py-0.5 lg:px-2.5 rounded-lg transition"
+            x-bind:aria-expanded="open"
+            x-on:click="open = true"
+            aria-haspopup="true"
+        >
+            <div class="flex items-center gap-1">
+                <div class="truncate max-w-36 sm:max-w-72">
+                    {title}
+                </div>
+                <Icon
+                    name="chevron-down"
+                    aria-hidden="true"
+                    class="size-4 mt-1"
+                />
+            </div>
+        </button>
+
+        <button
+            class="bg-black hover:bg-white hover:text-black font-semibold py-2.5 px-3 rounded-md cursor-pointer ml-auto transition"
+        >
+            Contratar agora
+        </button>
+    </Container>
+
+    {/* Dropdown Menu */}
+    <div
+        x-cloak
+        x-show="open"
+        role="menu"
+        class="absolute top-0 bg-lime-400 w-full py-6 2xl:py-24 rounded-b-2xl drop-shadow shadow-sm max-h-screen overflow-auto"
+        style="display: none;"
+    >
+        <Container class="text-black relative xl:w-10/12 2xl:w-5xl">
+            <button
+                class="absolute border border-black cursor-pointer rounded-full -top-3.5 2xl:-top-21.5 right-2.5"
+                aria-labelledby="Fechar"
+                x-on:click="open = false"
+            >
+                <Icon name="x-mark" class="size-4" />
+            </button>
+
+            <div class="border-b border-black pb-6 lg:pb-12 mb-6 lg:mb-12">
+                <span>Curso de formação</span>
+                <h1 class="text-xl lg:text-2xl">
+                    {title}
+                </h1>
+            </div>
+
+            <div class="flex max-lg:flex-col gap-2.5 justify-between mb-3.5">
+                <h6 class="font-medium text-xl lg:text-2xl">
+                    Conheça outros cursos da EDUSEG&reg;
+                </h6>
+
+                <div class="flex max-lg:flex-col gap-0.5 lg:gap-4">
+                    {/* Search */}
+                    <label class="flex gap-1 items-center">
+                        <span class="text-nowrap max-lg:w-2/5 text-right"
+                            >Buscar por</span
+                        >
+                        <div
+                            class="flex items-center border rounded px-1.5 py-0.5 lg:px-2 lg:py-1 bg-white/20 focus-within:bg-white w-full"
+                        >
+                            <input class="outline-none w-full" />
+                            <Icon name="magnifying-glass" class="size-5" />
+                        </div>
+                    </label>
+                    {/* Search End */}
+
+                    <!-- Filter -->
+                    <label class="flex gap-1 items-center">
+                        <span class="text-nowrap max-lg:w-2/5 text-right"
+                            >Exibir apenas</span
+                        >
+                        <div class="relative w-full lg:w-30 bg-white/20">
+                            <select
+                                class="flex border items-center justify-between gap-0.5 border-black rounded px-1.5 py-0.5 lg:px-2 lg:py-1 appearance-none focus:outline-none w-full lowercase"
+                            >
+                                <option value="formacao">Formação</option>
+                                <option value="reciclagem">Reciclagem</option>
+                            </select>
+                            <Icon
+                                name="chevron-down"
+                                class="absolute top-2.5 right-2.5 pointer-events-none size-3.5"
+                            />
+                        </div>
+                    </label>
+                    <!-- Filder End -->
+                </div>
+            </div>
+
+            <div x-data="{ expanded: false }">
+                <div class="relative">
+                    <div
+                        x-show="! expanded"
+                        class="absolute bottom-0 h-16 w-full bg-gradient-to-t from-lime-400 to-lime-400/30"
+                    >
+                    </div>
+                    <ul
+                        class="list-disc list-inside max-lg:[&_li]:truncate font-medium overflow-hidden"
+                        :class="expanded ? 'h-none' : 'h-36'"
+                    >
+                        {
+                            courses.map(({ data: { title, slug } }) => {
+                                return (
+                                    <li>
+                                        <a
+                                            href={`/${slug}`}
+                                            class=" hover:underline p-0.5"
+                                        >
+                                            {title}
+                                        </a>
+                                    </li>
+                                );
+                            })
+                        }
+                    </ul>
+                </div>
+                <button
+                    :aria-expanded="expanded"
+                    x-on:click="expanded = ! expanded"
+                    class="border border-black rounded-full px-5 py-1 cursor-pointer mt-2.5"
+                    aria-expanded="false"
+                >
+                    <span
+                        x-text="expanded ? 'Ocultar' : 'Exibir todos os cursos'"
+                    >
+                        Exibir todos os cursos
+                    </span>
+                </button>
+            </div>
+        </Container>
+    </div>
+    {/* Dropdown Menu End */}
+</nav>
diff --git a/superpage/src/icons/spinner.svg b/superpage/src/icons/spinner.svg
new file mode 100644
index 0000000..97b48fe
--- /dev/null
+++ b/superpage/src/icons/spinner.svg
@@ -0,0 +1,4 @@
+<svg  xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
+<circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
+<path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+</svg>
diff --git a/superpage/src/layouts/Layout.astro b/superpage/src/layouts/Layout.astro
index 6739eb1..8589fa2 100644
--- a/superpage/src/layouts/Layout.astro
+++ b/superpage/src/layouts/Layout.astro
@@ -19,13 +19,13 @@ import Footer from "./_components/Footer.astro";
         </slot>
 
         <script
-            data-category="analytics"
             is:inline
+            data-category="analytics"
             type="text/partytown"
             src="https://www.googletagmanager.com/gtag/js?id=G-G2989LF493"
         ></script>
 
-        <script data-category="analytics" is:inline type="text/partytown">
+        <script is:inline data-category="analytics" type="text/partytown">
             window.dataLayer = window.dataLayer || [];
             function gtag() {
                 dataLayer.push(arguments);
diff --git a/superpage/src/pages/[slug].astro b/superpage/src/pages/[slug].astro
index 2d0254b..1daa9dd 100644
--- a/superpage/src/pages/[slug].astro
+++ b/superpage/src/pages/[slug].astro
@@ -5,6 +5,7 @@ import { Icon } from "astro-icon/components";
 import Layout from "~/layouts/Layout.astro";
 import Container from "~/components/Container.astro";
 import HeaderNav from "~/components/Course/HeaderNav.astro";
+import BuyButton from "./_components/BuyButton.astro";
 
 import placeholder from "~/assets/placeholder.png";
 
@@ -120,17 +121,11 @@ const { Content } = await render(course);
                             <div
                                 class="flex flex-col justify-center gap-2.5 max-lg:w-full"
                             >
-                                <a
-                                    href="#"
-                                    class="text-black font-semibold bg-lime-400 rounded p-2.5 max-lg:text-center hover:bg-white hover:text-black transition"
-                                >
-                                    Contratar {
-                                        new Intl.NumberFormat("pt-BR", {
-                                            style: "currency",
-                                            currency: "BRL",
-                                        }).format(data.course.unit_price)
-                                    } p/ matrícula
-                                </a>
+                                <BuyButton
+                                    id={data.id}
+                                    name={data.title}
+                                    unitPrice={data.course.unit_price}
+                                />
                                 <a
                                     href="#solutions"
                                     class="text-blue-400 underline hover:no-underline text-center"
diff --git a/superpage/src/pages/_components/BuyButton.astro b/superpage/src/pages/_components/BuyButton.astro
new file mode 100644
index 0000000..b44d412
--- /dev/null
+++ b/superpage/src/pages/_components/BuyButton.astro
@@ -0,0 +1,76 @@
+---
+interface Props {
+    id: string;
+    name: string;
+    unitPrice: number;
+}
+
+import { Icon } from "astro-icon/components";
+const { id, name, unitPrice } = Astro.props;
+const currency = new Intl.NumberFormat("pt-BR", {
+    style: "currency",
+    currency: "BRL",
+}).format(unitPrice);
+---
+
+<button
+    data-toggle="buy"
+    data-id={id}
+    data-name={name}
+    data-unit_price={unitPrice}
+    class="text-black font-semibold bg-lime-400 rounded p-2.5 max-lg:text-center hover:bg-white hover:text-black transition cursor-pointer disabled:pointer-events-none relative overflow-hidden group"
+>
+    <div
+        class="absolute bg-lime-400 inset-0 hidden group-disabled:flex items-center justify-center"
+    >
+        <Icon name="spinner" class="size-5 animate-spin" />
+    </div>
+    Contratar {currency} p/ matrícula
+</button>
+
+<script>
+    type Item = {
+        id: string;
+        name: string;
+        quantity: number;
+        unit_price: number;
+    };
+
+    async function checkout(item: Item): Promise<Response> {
+        const r = await fetch("https://api.saladeaula.digital/carts/", {
+            method: "POST",
+            headers: {
+                "Content-Type": "application/json",
+            },
+            body: JSON.stringify({ items: [item] }),
+        });
+
+        return r;
+    }
+
+    const button = document.querySelector(
+        "[data-toggle=buy]",
+    ) as HTMLButtonElement;
+
+    button.addEventListener("click", async (e) => {
+        const target = e.target as HTMLButtonElement;
+        const { id, name, unit_price } = target.dataset as {
+            id: string;
+            name: string;
+            unit_price: string;
+        };
+
+        const item: Item = {
+            id,
+            name,
+            quantity: 1,
+            unit_price: parseFloat(unit_price),
+        };
+
+        target.disabled = true;
+
+        const r = await checkout(item);
+        const json = await r.json();
+        location.href = `https://checkout.betaeducacao.com.br/${json.id}`;
+    });
+</script>