Adafruit used to carry the Arduino Experimentation Kit but now it's a dead link
This is pretty cool. I wish they had an option sans the Arduino and breadboard, because it's just the sort of kit I would love to have. However, it does have the guide and what-not available, so I'd just have to source my own parts, which isn't a huge deal, but I wouldn't mind paying a little or not just to have the convenience of all the parts in one place.
Stil, at $80 that's quite reasonable as the arduino is $30 already. Interestingly enough it seems that the Arduino is getting cheaper and cheaper. I personally recommend everyone get one :D
But maybe that's just me :P