It happens every holiday season. One or two products in limited supply become the "it" gift of the year, and retailers use their scarce availability to drive traffic into their stores, sometimes to tragic result, as happened with Black Friday's Walmart trampling death. If you weren't one of the lucky few to actually get a Wii Fit Balance Board at the MSRP of $89.99, at least you didn't die trying. But if you're determined to get one in time for Chanukkah or Christmas, your best option is ebay. The going rate has been about $125-150. Look for BuyItNow listings if you want an immediately confirmable price, or use esnipe if you want to maximize your chances at winning with a low bid.
Or consider this: Print a picture of the Wii Fit, and box it up with a Wal-Mart or Amazon.com Gift Card
for $89.99. That way, when they become available, your family will get a little bit of Christmas again. And we all may Need a Little Christmas again soon.