$321.00 just kiding!
i think around 169 dollars
Yes
You can trade in your DSI at Best Buy for about $40.
You should be able to buy it at most stores that sell 3DS Games such as Gamestop, EB Games, Walmart, Best Buy and Future Shop.
A 3DS is €699
No, the DSi isn't the same in money value as the 3DS is.
NO
It is recommended to buy the Nintendo 3DS from a known electronic retailer since you are guaranteed for a factory sealed console (unless you choose otherwise)
It is best on PC. I have it on 3ds and it is ok but not as good, but PC is very good so if you are looking to buy it, buy it on p.c
There are many places to buy 3ds games. The best places that I suggest to find these new and hard to find games are GameStop or Game X-Change. Also you can look in store or online at Wal-Mart, Best Buy and Target.
You buy ds or 3ds games and then put them in your 3ds.
There is no Minecraft for the 3DS.