Some time back, probably 31 years ago my kids sold sweetcorn.  They had people come from many miles away.  It was an annual event.

Once we had picked a lot of sweetcorn and had an emergency that took us away from the stand.  I quickly took a coffee can, taped a sheet of paper on it saying, "one bakers dozen (13) ears, $2.50 or $2.00 not certain anymore.

That evening when we came home all the sweetcorn was gone and the can was full of money.

It's a fond memory for our family.

This clip of a store that operates that way brought it to mind