At the beginning of each semester, ETH students receive CHF 18.- for this service on the ETH Print service "Free Pages" account (auditors do not receive this credit). The costs for the printed pages are debited from this account during the course of the semester; if the credit amount is used up, the user will no longer be able to trigger any further print jobs. In order to be able to continue printing used up credit, it is possible to top up your printer account via IT Shop (https://itshop.ethz.ch) using Print Service Prepay.Prepay manual:
A black/white page costs CHF 0.02; a coloured page costs CHF 0.07. Duplex printouts receive a discount of one centime.