Soundwave on 17 May 2009
It's to get people into the stores ... they use a deal on a product they know is popular (Wii) and hope they spend on other things while at the store.
Especially in times of recession, retailers will try to do stuff like this. People are trying to save money now and Best Buy wants to get them out of that mind set and to spend, spend, spend.
Get that Wii and then maybe pick up a DVD, an extra controller, an extra game, etc. before you know it you're spending $400 because of a $20 gift card, lol.
