1) it all depends on the size of the media
there is no answer, a game can range between 8MB-256MB, same with music and everything else

2) dont know, but doesnt one of the local shops sell it?
usually those online shops that also sell flashcarts charge about 4x the price they should be
I checked amazon.ca and there was like nothing there...

3) yea, its on the front page here, though maybe look for a shop that sells a perfect bundle
I think it just means shops in the country wont be able to sell them
even though there some online shops here in the US that sell them...