Every year NACC members complete a survey of their current concessions menu for each of their venues.
When they complete their survey, they are then able to view the surveys of other members. There is also a summary of all menu item catagories and sizes. This summary lists the item catagory, size along with the lowest, highest and average price based on all the surveys for the given year.
But again the only way to see the menus, priceing and the summaries from other venues, you have to enter your menu.
If this sounds like something that would be of use to you, join the NACC and enter your menu to share with other likeminded University managers.