Mechanical Vending Machine cover a tremendous area of machines that often times no one even remembers there true names. They were often sold by comapnies that just imorted or commssioned units for a couple of years with there name on it, then disapaered.
Many of them use Edina Coin Mechanisims but there were oher Styles.
While a Mechanical Soda or Combo machine has to have electricity for the soda to be kept cold, and often for the change machine to operate, the coin mech is totally mechnical and needs no power. Many of the snack machines can thus be set anywhere in the room without reguards to where the electrical outlets are located.
The pricing is often changed simply be adding or removing parts in teh coin mechanisims itself, or in some cases just rotated the parts to different positions.