Cashbox used in a sentence

Cashbox in a sentence as a noun

The parents buying flats of drinks from Costco, a steel cashbox, and taking them to a street fair?

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.

That doesn't make sense - you would think the machines could track their cashbox balances perfectly, requiring dumping it in a bag, printing a status report/receipt/audit log, and attaching that to the bag.