KioskBuddy has different pricing plans structured for all kinds of kiosk use cases, from people running occasional events to businesses looking to completely automate their point of sale process. Basically, monthly costs are calculated depending on how much the kiosks will actually sell for you. Each plan comes with a base amount of transactions included with the base fee, then any transaction beyond that amount incurs an additional charge.
To find the best plan that works for you, check out the pricing page, which has a calculator to help you find the best plan for you as well as details on all of the pricing plans.