Hyren is correct, the 2/3DS range is region locked so each restore and console are only useable with one another.
The virtual console games range from about $5-$16 if memory serves and Metroid is well represented as is Kirby, donkey kong country etc. even Pokémon red/blue/yellow and silver/gold/(soon)crystal are on there too.
Only problem is that if you download virtual console games on one system and then get a new system you have to re buy the games all over again. Nintendo have been mooting the end of this archaic system for ears but are yet to deliver.
Looking For: Wreckers Saga TPB Collection (with Requiem)