If I needed a reason to avoid Windows 8 and Windows phones, this would do nicely. As it happens, I have for years had a policy of avoiding Microsoft, but it's nice to have my prejudices validated by fact.
I wonder what would happen if someone with $5 to spare took it upon themselves to repeatedly buy each and every one of the scam apps, and asking ms for a refund of them in between.
Microsoft should take care of this issue soon or they will eventually lose the trust of it's customers (eg. IE).