They play an important roll within the Christian community. Brochure design for churches is very important, both in spreading the Good News, and also in communicating church information
They do play an important roll with Christian communities, as they can offer information about the community (promotional material) for new members.
They could be used for providing information about kids clubs, student meetings, outreach programs or just an overview about the values the church stand by.
Many churches have annual reports about where tithes are spent, which are good to publish for all to see.
Brochure design costs do depend on a few different factors, such as the number of pages, the number of pictures/photos, and the agency that is chosen (as all designers have their own rates and profit margins).
The main thing to remember is that all design agencies are privately owned and profit making. Therefore shopping around for quotes is essential.
It is very wise for you to select a designer that has experience in offering design for churches in the past. One that has experience of working with the christian communities and has a good portfolio of other charities they have worked with.
Best thing is to get a few quotes from local creative agencies that have done work in the Christian community. It is necessary to shop around and compare quotes. All design agencies set their own fees, so prices will vary considerably.