Those cards are where I draw the line
Over 20 million amiibo have been shipped worldwide in this past year. Despite the manufacturing issues and poor communication, Nintendo has done well for itself.
The margins are likely far more lucrative for the Animal Crossing: Happy Home Designer cards though, as 8.6 million individual cards have been sold to date — keep in mind that the game just launched at the end of July in Japan, and only in the past month in the west.
Take a look at the charts in the gallery below for the full rundown on the amiibo situation right now. To recap a bit, the US market still accounts for the vast majority of sales with 56% of all product sold (the next highest is Europe with 23%); Link, Mario, and Pikachu are still the top three sellers in the US; and in Japan, the Animal Crossing Cards are on top.
Corporate Management Policy Briefing [Nintendo]