Sure you can get 650 dollars. That's around 360 euro.
The 4 games are 45 euro new. The Wii is 250 euro. You're way above only on that.
My advice if you get troubles selling them - say that this is the price, and you get Red Steel + 2 Wiimotes extra. Voila, someone's bound to buy it. And what's more - you could end up close to 3 times your original assumption!
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS