Ran some numbers and figured I can do this for a more reasonable cost ($0.09 / INR 6.5 with profit) and also offer same day deliveries after tying up with another company doing local deliveries.
Used WordPress for this for now and setup a shop, bought a colour printer and got the site up and running.
The process is still a bit manual - people upload their documents on to our site, we check the page count and send an invoice which they need to settle after which we print and ship.
But for now, I think that is good enough. Might automate down the line.
Need to get the word out slowly.