I've been going to a couple of my local Cost Plus World Markets over the last month and they have some discounted wines at 50% off if you buy any 4 from the disco shelf. I've been able to get Heidsieck Monopole for $20 and Nicolas Feuillatte for $15. I usually mix in some cheaper whites and reds to get up to the 4 minimum.

Each store has a different amount left and the displays are sometimes hidden. Just throwing it out to anyone who has an interest.