Advertising

I am trying a couple of other ways to advertise this book. One way, I am mailing out post cards with a quick rundown on the book and author and also a order form for the publishing company. The ones the publisher gave me are a large post card and they cost the same as first class mail. So I am cutting the size down to a regular post card size, this will be for people I want to send the information too that live out of state. I am also working on a flyer that can be added to the daily newspaper in my area as an insert. Advertising all cost money and you have to keep pinching the old penny but you have to spend money to make money. Any suggestions would be appreciated.