There will be opportunities to either purchase or earn tokens for use on the live network after launch of the main network.
Radix tokens will mainly be traded on the integrated decentralized exchange. When the Radix Public Network goes live, you will be able to buy/trade the Radix Stable Tokens through this integrated decentralized exchange. Centralized exchanges will also offer the Radix Stable Token if they decide to support it. Further details will be released closer to the launch of the platform; right now the team is focused on developing and testing the platform.