Yep its $26.
yes but you have to pay for it
No, you only pay for it one time. All updates are free.
On a mac, if you have snow leopard or above, the App Store has Minecraft Pocket Edition (you need to pay for it). As for Windows, I'm not sure.
You'll have to pay twice, but you can save two usernames on one computer. Switch when you open the launcher.
You could try running minecraft through a torrent, and getting an aggressive internet security system. However, your best bet would be to do the legal thing, and pay for your minecraft.
Minecraft doesn't mess up your computer. Minecraft is a malware free program.
no you can not
It's free if you're playing by yourself. Once you step into the multiplayer realm, you have to pay.
Minecraft is made to work with ANY computer that uses java.
no
IF it's your first time getting Minecraft, you have to pay $26 for the launcher. If you have Minecraft before, then no.
You can also play on any other computer. (Windows, Mac OSX, Linux) Please note that Minecraft requires at least 1 GB of RAM. Minecraft is out on Xbox 360 and smart phones too.