Whenever there’s a storyline with quark, they talk about money/latinum.
I remember in one of the next gen episodes that there was discussion about money and Picard said something about how they’ve moved away from money.
So do Starfleet get paid now?
Update: thank you for the quick responses. From what I’m gathering the tldr is that the following is the answer
- Ferengi love for money/not being a post scarcity society by design
- Bajorans being so near their slavery times and not post scarcity yet
- Quark creating an atmosphere of camaraderie/gambling/upgraded replicators/actual food
All this requires some form of currency.
You can buy alcohol cheap from a store in real life, along with all the ingredients to make drinks, yet people still go to bars where cocktails cost more than a meal. They’re not going just because of superior bartending skills, they’re going as part of the experience of drinking with other people. Because on DS9, your other option is basically to drink in your quarters, which is no fun.
There are more options for food on DS9, but people still go to Quark’s for the atmosphere. It’s lively and fun, which is probably hard to come by otherwise on a remote space station. I doubt people are coming to Quark’s in droves for the food though, it’s more just something you get if you’re already there.