OMG we finally were able to get one this past week (we have many friends who have one and played a lot). They are sure hard to find if you are not getting them on Ebay or from a website.
We found ours at a GameStop. I also got the WiiFit but haven't hooked it up yet but again my friends have and it's so much fun.
It is worth the $$$ and something you go back to play all the time. I am hooked on the bowling.
Finally something for us folks who are not really gamers.