This $20 represents the 200 pages per quarter you're allocated due to the Instructional Technology Enhancement Initiative Course Materials Fee and does not represent actual money nor will it be billed to you.
This fee also helps fund Collaborate, GauchoSpace, campus WiFi, and numerous other services bettering student success at UCSB.
But why $20?
A format was needed for GauchoPrint to work and ultimately this format won as it gives UCSB the most options for future features and options for the students.