Most eresources base pricing on student FTE (full time equivalent). This information is available from the Office of Institutional Research.
Vendors will sometimes base pricing at least partly on Carnegie Classification. Currently (April 2023) Berry's basic Carnegie Classification is Master's Colleges & Universities: Small Programs, which is sometimes referred to as "small master's".
Very occasionally a vendor will base pricing on the number of students and/or faculty in a particular specialized area (major, department, course). The Office of Institutional Research can help with providing this information.