I contacted a mailing list broker to purchase a list with church information within in 100 miles of my home. I own a photography company and found that most churches do a yearly membership directory that include family portraits of their members along with their home address and phone number. I checked into some publication services, and I can offer a directory for $6 each and still make a decent profit. After booking my first church assignment, I realized that I need to advertise my services to churches with more than 150 members. My list broker was able to sell me a list with information for my target market in my area.