The same cable is 6.46 shipped from monoprice.com (it's their deal of the day)
http://www.monoprice.com/products/product.asp?c_id=108&cp_id=10830&cs_id=1083001&p_id=3566&seq=1&format=2

Bought these, work well, surprisingly cheap for gold-plated cables !

do these make any difference in graphics?

#3, it really depends on your TV. If you have a huge screen HDTV then yes, it will marginally improve the image. If your Wii is hooked up to a 20" CRT TV then you'll probably not see much difference.

I thought the Wii will only do 480p. Why do u need a HD component cable for that?

thanks durk...yep got a '42 hdtv. for 8 bucks i think i'm getting this.

#5 Its so you get a better connection and the progressive scan.

When I first looked into the component connector for the Wii, people said it made some games look worse, giving them a squared off edges look (like Zelda). Is this still the case or do most games work well now?

I havent tried Zelda, but it makes galaxy, sports, and a few other games i have look better (i have a 42" 1080p toshiba).