How do you change the price of soda on a Royal Vendo rvcc660-9?

To change the price of soda on a Royal Vendo RVCC660-9 vending machine, locate the pricing switches inside the machine. Open the front panel and find the control board, where you'll see a series of dip switches corresponding to each selection. Adjust the switches to set your desired price for each product. After making the changes, close the panel and test the machine to ensure the new prices are functioning correctly.