You can test with these fake credit card numbers.
All examples point to a company we created specifically for this demo, called
recurlyjsdemo. Naturally you'll want to replace all occurances with your real company subdomain.
The demo company defines two plans:
a forever 30% off coupon, named
Update Billing Info, and One-time Transactions both require signatures, which must be generated server-side and rendered to an option. For demonstration purposes we pre‑computed the signatures and hardcoded them in.