It averages out to about $50 per month (not including ordering a drink on the rare times we eat out).
We tend to stock up on sales or on duty-free booze when we travel.
I tend to drink the same thing, my husband has much more varied tastes and we like to drink with friends, so we always have beer, wine, whiskey, rum, vodka, port, Baileys, etc, in the house, plus brandy, Kirsch, etc, for cooking.
Edited to add: I'm a big fan of consumables as gifts, so I'm always thrilled when people gift us our favourite drinks - saves us money and we don't have to store/display/dust it. And it's affordable, memorable and easy to locate. Everyone wins.