If you want to collect a one-time payment for a life-time subscription, a one-off service, or physical goods, you can do so by creating a one-time product in Stripe. Creating a product in "Stripe" is as simple as clicking "+ Product"
Next you can set the product to One-time so the customer is only billed once. Billflow will take care of displaying that for you.
Now that we are done creating the products, for Billflow to recognize these products as a single service we need to tag it with an "sb_service" tag. This tag should be the same for all products(pricing plans) that are in the model. Next we tag each with a unique "sb_tier" that corresponds to the plan. That means we have 2 unique "sb_tier" tags for our example.
Finally, we go back to Billflow and refresh the "Pricing Plan" page. We should see our pricing plan pop up.