Bumping this up since the new Nintendo Direct announced monthly sales of Virtual Console games for Wii U leading up to and after their launch with a spring update:
Virtual Console for Wii U: A spring system update will add Virtual Console software to the Nintendo eShop for Wii U. The service will launch right after the spring update and will include a selection of NES and Super NES games, with Game Boy Advance games to be added in the future. The prices for NES and Super NES Virtual Console games for Wii U will be the same as they were for the Virtual Console on Wii. People who have already purchased the Wii version of a certain NES or Super NES Virtual Console game and transferred it to their Wii U console can buy the enhanced Wii U version of the same game for the reduced price of $1 for NES games and $1.50 for Super NES games.
Classic Games for 30 Cents! To celebrate the 30th anniversary of the release of the Famicom in Japan (which was known as the NES in the United States), Nintendo is making one NES or Super NES game available each month now through July at the anniversary price of just 30 cents. Each game will be available at that price for 30 days, and the first is the NES game Balloon Fight, which is now available in the Nintendo eShop for Wii U.
From Balloon Fight on, these are the future $0.30 games until July:
February - F-Zero
March - Punch Out! Featuring Mr. Dream
April - Kirby's Adventure
May - Super Metroid
June - Yoshi
July - Donkey Kong
The only regular game on sale right now is Little Inferno for one more week, so get that if you're interested.