His work deserves better. As for printers, the local copy shops are fine when you don't have a picture. Cheap is good - so long as the blacks are black and the folds are square. Professional persuaders depend upon perspiration rather than inspiration to sell ideas. Newsletters that are always late, or are published on an occasional basis, are not nearly as effective as regular reports from the field.
Good writing makes a difference.
But good writing that is waiting for ink and paper may not be good writing after all. Reports of meetings or building improvements are OK but people stories are wonderful. Look for opportunities to feature a person who has met the Lord and was irrevocably changed. Write about families that are growing in their relationship with Jesus. Find ways to talk about the work as it affects local people.