Google launches marketplace for Apps

An online store for third party developers to sell applications they develope for apps. Google apps has 20+ million users and there are atleast 1000+ companies who would want to invest into selling at such market place. The apps are going to focused... there aren't many products in apps, so it would be easy for the developer to choose a product to develope an app. There is a screening process to become a vendor on google apps.. and a fee of $100. Google collects 20% of the revenue earned by third parties.