Use Stripe price
How to use a price that already exists in your Stripe account
Available on: subscriptions and payment plans with a fixed price. Not available on one-time payments or pay what you want.
What is use Stripe price?
Instead of entering an amount, you can point at a recurring price that already exists in your Stripe account.
The amount, the currency and the frequency all come from Stripe. The price isn't managed in Checkout Page — to change any of it, change it in Stripe.
Use it when your pricing is already set up in Stripe, or shared with something else that reads from it.