Radio Shack has an amazing deal for you: A DS Lite for only $74.97. You can pick up a DS in a bunch of different colors too, including Metallic Rose, Blue, Black and Silver.
Sadly, you won't be able to order one online; these are in-store only deals. You'll have to haul yourself down to Radio Shack, but while you're there you can pick up... I don't know what else you might be able to pick up at a Radio Shack. Maybe a remote control car? Maybe some obscure adapter you need for a stereo from the 1970s? A bad cell phone plan?
Anyway, it's a good deal. You should take advantage.
Source: Radio Shack