What were the rewards the other years?
I'm thinking of joining the club.
I don't know about NA, but in Japan the prizes were quite good. I don't remember all of them but until now I got a TV remote that looks like a Wii remote, a Super Famicom controller-shaped classic controller (Wii), a Mario Hat, a Mario badge set, a Game & Watch machine...
If you buy a lot of Nintendo software you should definitely join and register the points/coins/whatever.
Japan always get the best prizes :(
Yeah... but see it this way. Japan also pays higher prices for the games.
In Japan we can only dream of 3DS games for 39.99$ or DS games for 29.99$ MSRP. New games here cost 4800 Yen (=60$) or sometimes even up to 6090 Yen (76$).
I hope you'll understand that those better prizes are set off by worse prices. ;)