Publix deli popcorn machine

The Publix in the Kelleytown area north of McDonough GA has an old-timey looking glass box popcorn popper in the deli area. The other three Publix within a 10 mile radius do not, if my memory is correct. Thought it was an interesting addition to all of the other varied deli offerings. Retro coolness. Wondering now what the price per kernel was.