Thought I'd never find one of these deals, but somehow I did today.
I found a Game-N-Go Kit for the DS which included Elite Beat Agents. It was on clearance for $6. The rest of the kit consisted of 3 styluses, a game case, and a screen wipe. It was at the WalMart in Detroit Lakes, MN. The still had about four left.
The Denton, TX location had 6 of these today, but priced at $12 still.
They also had like 10 DS rumble packs for $6 each.