I have not given up the idea to sell Xojo apps in the Windows Store. Since these posts, things have evolved.
I have probably definitely given up on the Modern API apps written in VB. Support in Msdn is dismal, and it is still so raw, people who criticize Xojo iOS have no idea what MS developers have to go through…
Since the last post, it appears my apps sell much less than I thought. About ten times less than in the MAS. But it is probably due to the very bad market penetration of Windows 8.x, which account for only 18 % or so of the global installed Windows base. That said, I have been using Windows 10 Tech Preview for several months. It is every bit what 8 should have been : Windows 7 with Touch support. Since I learned it will be free for 7 users, I have found a renew interest.
Also, some statistics about the Windows Store sales have been available : http://blogs.windows.com/buildingapps/2014/02/27/windows-store-trends-feb-2014-update/
From what I see, education which my products target with school handwriting is at the low end of sales. That may explain the relatively low sales. I believe business and finance, or utilities, have a much better chance. Last year, there was that huge gap between kind of old fashion desktop apps, and Metro apps. Especially when Metro apps were full screen and desktop had windows. Now both execute in windows. I think there is a potential market for Xojo apps redesigned to comply with Microsoft Design Guidelines, that look and react to touch like Metro apps
Now there are about two dozen of Windows 8 tablets listed at Amazon, including pure tablets, and transformers (notebooks with detachable screen). I just ordered the Asus T100. That will be the occasion to design Windows app for touch, and verify my assumptions.
Since last, Microsoft has added the possibility to sign up for a desktop account with a Digicert Authenticode. It is much less than Verisign : $223 a year, about half. It remains more expensive than the Apple Store, but it becomes doable. Even with low sales, it will be reimbursed in a lot less time.