North Beach is hosting "Battle of the Decades" — a Friday night DJ party where drinks are a single, solitary dollar. One George Washington. Less than a parking meter gives you for six minutes. In a city where a craft cocktail routinely runs you $18 before tip, this feels less like a promotion and more like an act of economic rebellion.

The concept is simple: DJs spin tracks from different decades, the crowd decides which era reigns supreme, and you sip drinks that cost less than a MUNI fare. It's the free market doing what it does best — competing for your attention by offering insane value.

We're fans of anything that keeps nightlife accessible in a city that has quietly priced out most of its fun. San Francisco used to be the kind of place where you could stumble into a weird, affordable night out without planning two weeks in advance and budgeting like you're buying a used car. Events like this feel like a throwback to that spirit.

A few words of unsolicited wisdom: North Beach on a Friday is already lively, so get there early. Dollar drinks have a way of attracting a crowd — and a crowd has a way of turning dollar drinks into a memory before you even walk through the door. Also, pace yourself. Just because the drinks are cheap doesn't mean tomorrow morning's headache will be.

If you're looking for a low-cost Friday night that doesn't involve streaming another show on your couch, Battle of the Decades is worth the trip. Your wallet — and possibly your dance moves — will thank you.