I live a 5-minute bike ride away from the Delft Technopolis, and 20 minutes by train to Leiden's Bio Science Park. If I want to, there's 24h train services to the dense city centers of Rotterdam (15 minutes), Den Haag (15 minutes) and Amsterdam (45 minutes).

I do own a car, but I actually have to set a recurring reminder on my phone to take my car out for a ride every so often to avoid the battery draining empty. I think US people romanticise car ownership because they can't imagine how good the alternative can be.

That said, I don't work in academia and don't know what the median wage for that would be. But I don't see why a researcher wouldn't able to afford to live where I do currently, it's not wildly expensive here.