I don’t know if this counts, but there is a place in Redmond, Washington that sells honey using roughly the same approach. They leave jars of honey worth up to $100 each on the shelf outside their barn wall with a locked cashbox and you just pay on the honor system.
a lot of small family farms have honor system. i used to let people come in for u-pick strawberries and fruit. also honey and during tomato season. until my insurance said that i cant do that and i will have to pay extra on the premium. even if i kept it hush hush, the homeless/drug addicts started moving in and trashing the place. it became a genuine liability risk. so i had to fence as much as i could and put up signs.
didnt make a difference to the thieves. i have had a tractor, a trailer and multiple metal trellis systems and greenhouse building materials stolen anyways. but my honor system farm stand doesnt exist anymore. to even put up a farm stand, i have to get a special permit. the regulations are killing small farms.
i live in central washington, lots of fruit growers have unattended cash only fruit stands along the roads. its good for everyone; fresh as possible fruit for me, easy money for farmer.
they usually have cameras and the community usually comes together to catch anyone screwing around.