At CircleCI, we've been using Stripe Checkout for quite a while. It was increadibly easy to set up and very high quality (we replaced a hacky ugly checkout page

At CircleCI, we've been using Stripe Checkout for quite a while. It was increadibly easy to set up and very high quality (we replaced a hacky ugly checkout page with it), and it looks really professional. That professionalism is really important at the final stage of the funnel. One of the things that's really interesting about Checkout is that Stripe is actively focusing on increasing the conversion rate for us. Their new layout (with the phone number) has a 20% high conversion rate than the previous version.