The reason they’re cheaper is because they don’t need to charge tax on them.

I understand. Thank you for confirming it.

I’ve heard people here in Europe sometimes save on cigarettes in a similar way, by buying them across the border, where taxes are lower, or in duty-free shops at airports, but that’s possibly outdated or even made-up hearsay I’ve never checked.

That’s interesting there isn’t anything on wiki about it. It’s not a secret or anything.

There may be something I missed, or it might be such an inconsequential and uncontroversial phenomenon that no one deemed it worth documenting.