Subsail uses Stripe to power payments for your subscription sales. Currently card payments are available.
When you set up your Subsail shop, you can connect an existing Stripe account or create a new one. Once you have connected your Subsail and Stripe accounts, you can start accepting card payments right away.
Stripe charges a small fee to use their payment system. It is typically 2.9% + 30c of each transaction, depending on your country. Read more.