If you can't make it to the wine-bottling (or are the organised sort of person who likes to plan things in advance), there is a ISAAC Wine Special Order Form November 2009 available here. There are a couple of special offers. Some wines are discounted and there is a "7 bottles for the price of 6" promotion (which applies to multiples of 6 bottles as well so if you buy a dozen you'll get 14).