Hi Goldfish and Littmean. Right now we are limited to what our e-commerce operator FastSpring offers, and that's: credit/payment cards (Visa, Master Card, etc) and PayPal.
In some cases, we can also arrange a classic bank transfer, however due to technical reasons and the amount of work required for this, this is possible only for yearly-paid FairSaaS licenses.
If you need some further information, please contact us at support@corona-renderer.com
Thanks!