I have been searching and the best price I have been able to find for one of these units/kits is at carplayer.com is this the best I can do?

I know they are well worth the money and I hope I don't sound like I'm being cheap but I just figured i'd ask just to see if this was the cheapest?

PS: I'm looking for a 10 or 20gb unit, depending on price.

Thanks

Justin