Amazon is putting Apple on notice that it's coming for them with the opening of the Mac software store, complete with downloads. Many Mac software titles can now be purchased from the Amazon store and downloaded just like in Apple's own Mac Store. The Amazon titles available for download include Office for Mac, which is not available in Apple's own store.
Amazon is operating this software store much like it does its Android Appstore and makes purchased titles available for redownload in the event of getting a new computer. The pricing looks aggressive as is common for Amazon wares. It will be interesting to see Apple's reaction to this unexpected competition from giant Amazon.