I used to cap my wine purchases to $30 a bottle, and usually drank wines in the $15-$20 price range.
Unfortunately (or maybe fortunately), I have been introduced to several nice wines from the Okanagan Valley in British Columbia that I've become fond of. In particular, two vineyards are now in my regular rotation, but they are pricey wines... Laughing Stock Portfolio, which averages about $50 CAD a bottle, and Burrowing Owl which is around $40-$45 CAD a bottle. Generally, only popped open for a special occasion.