One of the greatest things about the App Store is that you don’t have software licenses to keep. You have an account, you purchase apps, those apps are tied to your account. No paid upgrades to keep track of across mailboxes, no registration emails, in-app purchases at best. That’s why people buy applications in the App Store: because it’s simple and you only have to setup a Paypal account or enter your credit card details.
The same cannot be said about the Mac: there’s no unified store, and if you want an app you have to visit the developer’s website and download it. You have a license for each app, and storing all of them in a single location can be a huge time waster. That’s why softwares like AppChest come in handy and, guess what, we’ve got 5 (ahem) licenses to give away.