I recently ordered this:
http://www.goldenshop.com.hk/AI-trad/wsc/ws_bundle.htm
And I must say, wow. I was a bit unsure about the site at first because it doesn't look very "professional", but the staff is very nice and helpful. Their site lists EMS as the only shipping option, but I asked by email if there was a cheaper shipping rate, and they sent it to me airmail for $7 less (Which I used to get a Famicom Sound Museum random CD).
As for the system... I already had a black and white swan and was looking to upgrade. The system came new, sealed in the box, with Clock Tower (B+W) and a One Piece Swan Colleseum (color) (I had originally requested two games from the list but there was a $10 charge that I didn't want to pay ). This is a real step up from the black and white one--the system has lots of color, I think possibly more than a Neo Geo Pocket, and it has lots of buttons to mess with. The games are fun too, but I still enjoy Gunpey and Makaimura (Which I owned before) more.
If you have ~$50 lying around (That's with shipping), you need to buy a Wonderswan Color. You'll be happy with it.
Oh, and are there any games you'd recommend me to get for it?