Because I've watched four episodes, and they have something like an 0-6 record (and counting). "All that work and no reward." Yet the next episode comes, and they are eating at a restaurant or buying fuel. They are perpetually low on cash but never completely broke.
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They're definitely working between episodes, it'll be shown and alluded to before long. Also recall Jet's words outside the casino at the end of Session 3, "we have to build up again from square one". The 200,000 he had to leave before would probably cover a couple of weeks' food and fuel.
The director also once quipped that tobacco was incredibly cheap in the series' universe, so the same might apply for certain other things. Could make sense considering the resources of a whole colonized solar system are divided amongst a population much smaller than that of modern Earth.