as of right now, no
Currently, as of this moment, no.
there is a demo section in the eShop and you can also use the search
No, but they will come out with one :)
you can't. But you can get a demo on nintendo dogs + cats on 3DS
No there was not ever a demo for the game
The game will say you can't play it anymore and will give you a link to see what the full version is about. It also gives you a decision whether to delete the demo or not.
Here: http://3dsmaxtrial.autodesk.com/3dsmax2008trial/Autodesk3dsMax2008_ESD_Trial.exe
You can get the free demo, although that isn't the full game.
Yes, they will cost money unless it is a demo or a limited time event
Sorry to break it to you, but there is absolutely no such thing as a DSi 3DS, nor will there ever be.
Minecraft is not available on Nintendo 3DS, and there are no plans for it to ever appear on the platform.
What ever