Buying a DS

[Canyarion]

Ok I'm on a mission here. I really don't know what exactly to do here.

In 3 weeks, I will get me a Nintendo DS. The cheapest DS I can get in stores costs €135 (with coupons) (can someone change that to dollars? Should be around $170).
I could also import a new color from Japan, but then I won't get the Metroid demo (is it worth it??): US$ 189.90 (€147.29). http://www.lik-sang.com/news.php?artc=3591
Importing gives $30 extra shipping costs.

Now about the games, all I want right then is Polarium. If you can find anything cheaper than €32, please tell me.

Last thing I want is a carrying case. I can buy one from this Dutch store: http://www.dixons.nl/Store/productLi...0&startrange=0
Or from Lik-Sang (if I also import the DS): http://www.lik-sang.com/list.php?nav=over&category=276&
I want an original Nintendo bag, not some 3rd party thing!

Edit: I like this case: http://www.lik-sang.com/info.php?cat...ducts_id=6095&

So what would you do? Or do you have any other ideas? thanks