Staged Postcard Mailouts

I am in the process of writing a mailout schedule to numerous subdivisions in my farm area. So far, I have six subdivisions with another two more to go. I've broken down the mailouts monthly and staged them so that 1/4th of each subdivision is covered in each 3-month period. This not only helps get my name out on a periodic basis, but really saves me from having to do bulk mailings 1-2 times a year and having to come up with a lot of money. With the monthly mailouts, I am so far averaging about $23, which is VERY affordable. As I said, though, I still have another two subdivisions to go, and one of those is rather large. Regardless, I don't see myself spending more than about $35/month on my postcard mailouts. Hopefully I can start getting the phone ringing as it has been pretty silent lately.