You don't need to buy an Octavio though, so I'm not sure why someone considering a Zune would necessarily add the two prices up in their mind.
As far as not showing the accessories, well I disagree with that idea... I think it is important to show that 3rd parties are signing up to support the Zune, especially when so many accessories are available for the iPod... if we didn't talk about Zune accessories until we were established, then I think that would be a big mistake.
There are much cheaper docks available though, I just haven't been able to see any of them yet... maybe once it is out I can cover all of the 'basic' accessories like the dock, the car pack, the travel pack, etc... but of course, a person only needs to buy the Zune.