No. It's sold online. The link can be found below.
No but minecraft is available through the PlayStation store
There is no disk version, it's all online.
You can't
No, you cannot.
I'm not sure if it ever will.
Minecraft takes up approx. 200mb of disk space
No.
No, it is a download from XBox Live Arcade.
If you're asking about when minecraft was sold to Microsoft, it was $2.5 billion.
yes, minecraft / mojang was sold to microsoft
No the disc for minecarfty 360 version has no been released there
No, the most important part of Minecraft is a premium account which needs to be registered online. Since the client program itself is only tiny, there's no real point selling it in disk form, you can get it online after registering your account.