The prices ARE showing up in your feed. The feed is not a web page, what you see when you view it in a web browser depends on the web browser, the browser will not normally display custom attributes such as the price.
To see what the feed actually contains you need to view the page source, eg right-click and select view source. If you view the page
http://adonaibeauty.com/index.php?option=com_googlebasexml&format;=xml&id;=1&limit;=100 you will see for example:-
<g:price>33.90 AUD</g:price>
The error is one that has crept in in the last release. To stop it happening you need to turn off the Show Product Attributes option. Looking at your products they don't seem to fit into the type for which Google supports color/size/age group variants, so I don' think this option is relevant to your site.