Mac App Store – Have you updated your MAC OS
Mac App Store is open and I was just searching for the app. You need to update your MAC OS to get the App store. To do that, just open the Apple menu in the top-left corner of your screen, choose Software Update, and follow the instructions to download the latest Mac OS X update, which includes the Mac App Store.
Once your install and restart your MAC, you will the App store. There are some great apps with good price. Advantage of MAC app store is that you can very easily update to new versions, download the purchased software again and again simply like the iPhone app store.