Yes! Since GitHub Pages dosen't let me run actual code (can't use it as a full-stack server, only to show html pages), I use heroku to actualy process the payment (Stripe on GitHub Pages captures the infos and send it using POST to my heroku instance).

My heroku instance runs heroku-stripe-checkout (https://github.com/christophercliff/heroku-stripe-checkout) but it's a bit outdated and I made some changes (to support shipping and the new Stripe API), which I described here : https://github.com/christophercliff/heroku-stripe-checkout/i...