Better Than 2 for 1

In the first of my series of "What the heck are they playing at"
I present a offer by one of the big supermarkets here in the UK, Sainsbury.

The papers and government officials are always banging on about binge drinking,
so here Sainsburys way of encouraging it!

And for any curious folk out there, I only bought 1 bottle.
Why would I buy 2. It could be a terrible wine ;-)