Both are simplified skins with a DHTML navigation menu on the left.
The cost is $49/year for access to download all of the current and future skins and updates as I release them (you may use them on an unlimited number of servers that you own). I am currently working on a couple color variations of the simplified skins above as well as an icon-based skin.
I'm using the paid subscription feature in vBulletin 3 for now to make the skins available so you need to register first in order to purchase the subscription, which will automatically grant access to the forums where the skins are available. If I can generate enough interest in the skins I will find/create a program to manage the downloads independantly of vBulletin and create a separate site for the skins..