here are the instructions for setting pricing in a AP 933:
Mode 20 – Price Assignment
Mode 20 is used to assign the standard price for all
selections in the machine. To access this mode,
press the Service Switch, then use the Set Price
Fast Track Key or press 20 on the numeric keypad.
Pressing either the ◄ or ► key will allow you to
toggle back and forth between the fields.
Use the numeric keypad to enter the price in Field A,
then toggle to Field B to assign the current price to a
selection. To exit this mode, press the C key or
press the Service Switch.
Note
♦ The maximum price allowed is $99.99.
Special Actions
♦ Setting selections with a blank price disables
that selection which means DEX information will
no longer be transferred or displayed for items
disabled in this way. The blank price is set by
depressing the # Key.
♦ The * key can be used as a wildcard in Field B
to set entire rows (12*) or the entire machine
(1**).
♦ After assigning the prices, make sure you adjust
the scrolling price tabs to reflect the current or
new price.
You can use the ◄ or ► key while in the
operate mode with the door open to check the
prices in the machine.