In reply to Rog Wilko:
>My experience in Australian supermarkets is that there are acres of shelves...
I've found similar in Italy, Spain and France. I remember reading about UK supermarket wine buyers. Their first question is 'Can I get 100,000 bottles?' Then price. Finally, what does it taste like?
Generally, with bends they can get it right. If a single grape variety doest hit the mark, they can blend until it does. There are brilliant single variety wines out there, but they vary from year to year. This is part of the charm.
I joined a wine club (Naked), and have learnt a lot. I drink less wine, but have a greater choice, and it is higher quality. TBH, some of it may be just psychological. Knowing what altitude the grapes were grown at, or the he history of a certain grape in a region, or even the age of the vines, doesn't add to the taste, but tempers the expectation. Its all subjective anyway, so anything that adds to the experience in a positive way is to be welcomed.