New third-party adapter GameCube for Wii U Revealed
In addition to the adapter controls GameCube Wii U from Play Asia, which is for sale for some days, other third-party companies have also revealed his; such is the case Mayflash.
This will hit the shelves on January 14, for a price of $19.99 USD. Unlike Play Asia, Mayflash adapter itself will have 4 entries, like the original; also be compatible with PC, regardless of the version of Windows you have, because there will be drivers for all of them.
Currently, it is almost impossible to find the official Nintendo adapter, this due to the high demand had since leaving with Super Smash Bros. for Wii U last November 21; on auction sites and resales, like eBay, you can buy it, but twice, and in some cases three times the original price.