Isn't Crooklyn getting paid twice for the literature? Once when publisher's "donate" for the literature, and the 2nd time, when householders give us their donation, that we put in the contribution box for them?
NO ONE that I know asks for donations in service, so they don't get any.
VERY FEW contribute when they pick up mags or literature. Some (esp older ones) have a monthly contribution they make each month to cover these costs. I know of one elderly sister who faithfully deposited her $100 check into EACH of the contribution boxes (WWW; Local Contributions; KH Building Fund). Very few can afford that kind of giving; and very few of those who can, don't.
Doc