In those days, there were no printing presses. Scriptures were copied by hand, AND were very expensive. Few could afford hand-copied copies!
Exactly right, PublishingCult.
Who had the job of copying these scrolls? After all, someone had to do it as they wouldn't write themselves. Are we to believe these men spend their entire nights sitting up at their dining tables by candle light writing out dozens of copies neatly by hand in order to devote the daylight hours to going from door to door giving them out to householders who were most probably illiterate anyway?
How would these men afford all the papyrus and ink? It is hightly unlikely they would be able to charge enough money to cover these costs. Also, the writers' cramp they would experience would be excruciating to say nothing of sleep depravation in order to get all the scrolls ready for an early start out in field service next morning. Really silly.
Mind you, even when I was a JW I always tended to be very sceptical about things like this that other JWs just accepted as wonderful upbuilding 'facts'. Sometimes I felt like pulling my hair out in frustration at some of the highly improbable examples they gave us in the WT, but thanks to JWN I realise I was not on my own