I know in Japan for instance, there’s a unmanned store where you can buy things with the only thing meeting you near the front entrance & exit is self checkout. It’s a trust based system where you walk in select what you want (without locking any essential or mundane item behind plexiglass), as in they depend on individuals having common sense on not stealing paying via a “honesty box” based on a honor system.
Depends on what’s being sold and where its at.
People set up honor systems like these for plant seeds, books, wood logs, etc and they all seem to work alright.
I couldn’t see it working well for anything easily resellable (with decent profit) as someone would likely exploit it.