One of the best parts of NextFlow Kit is how easy it makes payments. You do not have to write complex backend logic, create custom checkout flows, or wire up manual redirects. The template includes a complete workflow for one-time payments through Stripe.
This guide explains how to set up a one-time purchase in just a few minutes.
Why one-time payments are useful
Not every product needs subscriptions. If you want to sell:
- a digital product
- a template
- a downloadable file
- a lifetime license
- a one-off service
then a one-time charge is often the simplest option for buyers. Stripe supports this with “Products” and “Prices” that are set to standard one-time payments instead of recurring billing.
NextFlow Kit is already configured to work with these out of the box.
Step 1: Create a product in Stripe
Log in to the Stripe dashboard and create a new Product.
Give it a name, description, and set up a Price.
Make sure the price type is one-time, not recurring.
You can create multiple products if you want to offer different packages or versions. All of them will work with the same checkout flow included in the template.
Step 2: Add your Stripe API key to the environment file
NextFlow Kit reads your secret Stripe key from your environment variables.
Open your .env.local file and add your key under the variable called STRIPE_SECRET_KEY.
If you are deploying to Vercel, add the same variable in Vercel’s dashboard under Environment Variables.
Once this value is set, the template automatically initializes the Stripe client with the correct configuration.
Step 3: Use the product’s price ID in your UI
Each Price in Stripe comes with a unique ID. Inside NextFlow Kit, any checkout button simply needs that price ID passed to the included checkout route.
You can add multiple purchase buttons for different prices or products. The template will send the user to a secure hosted checkout page managed entirely by Stripe.
Step 4: NextFlow Kit takes care of the rest
Once the price ID is submitted, NextFlow Kit:
- creates the checkout session
- redirects the user to Stripe’s hosted checkout
- handles the success and cancel redirects
- keeps sensitive logic on the server
There is no dashboard wiring, no complicated webhooks required for this workflow, and no custom backend code you need to maintain. The checkout flow is secure, reliable, and requires almost no setup.
Why this workflow is so simple
NextFlow Kit was designed for creators who want to sell quickly without spending time learning all the details of the Stripe API. The template abstracts away everything except the two things that matter:
- Your Stripe product and price
- Your Stripe secret key
Everything else (session creation, server route configuration, redirects, security) is handled automatically.
This avoids boilerplate and lets you focus on your product and your marketing.
Final thoughts
If your business model is simple and revolves around selling a single product, template, or digital item, one-time payments are the easiest way to get started. With NextFlow Kit, the process is streamlined so you can deploy and sell within hours.
You set the product.
You set the price.
You add your API key.
The template handles the rest.
This makes it one of the fastest ways to begin earning with a Next.js project.