The games are smash bros brawl and punch out, both wii.
Punch out - probably 20 coins, the Nintendo's website isn't specifying. It may not work
Smash bros brawl - 30 coins
There is no way for me to check if these codes have already been redeemed. You may only redeem one code per game, so for instance if you've already registered brawl, you can't register it again with a different code.
I will do $1 per 10 club nintendo coins in bitcoin. Only charging if it works(of course) would prefer to do business with someone that's already got some feedback somewhere on the internet.