While Theta is an exciting technology, at Cointree, we're unable to provide specific investment or financial advice, so make sure you consult a licensed professional if you'd like any advice on whether you should buy and sell digital currencies or how to evaluate their business model. However, you can learn more about how many investors analyse crypto investments in our article on [how to evaluate cryptocurrencies](https://www.cointree.com/learn/financial-metrics-evaluate-cryptocurrency/). If you go ahead and buy Theta coin, it's easy to do using Australian dollars on our exchange.