These are costings for all Computer in LRCs and Labs:

Single Sided Black & White A4 - 5p
Double Sided Black & White A4 - 8p (4p per side)
Single Sided COLOUR A4 - 25p
Double Sided COLOUR A4 - 40p (20p per side)

Single Sided Black & White A3 - 10p
Double Sided Black & White A3 - 16p (8p per side)
Single Sided COLOUR A3 - 50p
Double Sided COLOUR A3 - 80p (40p per side)

Plotter Prints (A0,A1,A2) - £5.00

More information
https://ask.herts.ac.uk/printing-on-campus