It seems that Google wants to prevent overpriced (and possibly useless) apps from flooding their Android Market as it has set a limit on how much a developer can charge a potential buyer.
According to a post by Eric Chu, priced applications will be available to end users in the US starting this week, with the company adding end user support for additional countries like Germany, Austria, Netherlands, France, and Spain in the next coming months.
Currently, Australia can only download free applications from the Android Market (since the HTC Dream has only been launched this week). But hopefully we will be able to see better and more useful third party applications within the next couple of months.