It really feels good & fruitful when you get to hear something like this. 'Try before you buy' is one such feature that has been added into the application store that does promise to help you out.
How? It's very simple. Thought this kind of facility is not new, it actually assists you by presenting with a list of applicable apps. You just have to click on features after which a giant yellow icon will appear with a similar gargantuan text that will show- 'Free on the App Store.'
It is not that there won't be anything paid, infact this way you will get to see some of the paid as well as the lite versions of certain application that will allow you to decide whether to go for a certain thing or not.
Earlier also, Windows Mobile have given a platform for this kind of feature, where now, the iphone users too will be benefitted. And this will become possible as the feature projects itself to save the time of the users as now they won't have to go through the long lists of the applications.