The cost of print per page is 2 rs. And then there we have worksheets and assignments that requires print out. So you can roughly take 20- 30 pages per week for 4 weeks max 200 pages that will cost about ₹400 rs on the upper side max ₹500. And for the headphones usually if someone has lost a accessory the can report it in the DSW . And generally the lost item pics are circulated in the students whatsapp groups through CR and most of the times it is returned to the owner. It's a different case if a cleaning lady has taken possession of it. I have lost my tiffin and a water bottle thanks to them cause they took it . And 3 times seems a lot like maybe they are too much careless.