Developing for Microsoft platforms just got cheaper today.
Starting this week, Windows Dev Center requires only a one-time registration payment, which grants developers the ability to submit apps to both the Windows Store and Windows Phone Store, with no annual renewal fee.
This change is effective immediately. Each of our 600,000+ registered developers will no longer need to pay any additional fees to maintain their account. It’s also a very good time for developers new to the platform to get a Dev Center account and start submitting apps.
Source: Windows Blog-----------------------