You can do it with simple credit card also:

How to contribute in the Avai FC Crowdsale with Credit Card
Instructions for contributing in the crowdsale with a credit card.
After successful registration and login to Avai FC Dashboard, you need to agree with the terms and conditions.

In the next step will see the option for contributing with the credit card. This process is done by an external partner and supports only credit cards which work with the 3D Secure online security system. If you are not sure if your card supports 3D Secure, please contact your bank to check.

Specify the amount that you would like to contribute in the entry field, and remember all contributions are calculated in USD (US Dollars).

https://medium.com/avai-fc-token-crowdsale/how-to-contribute-in-the-avai-fc-crowdsale-with-credit-card-aa58d18c8b9