Yes, bought a mailing list and had the company send out a postcard to each resident. Is there any cheaper way?
I assume that you designed a card for your business? Cheaper? Depends on who you used and the quality of your postcard. Both physical quality as well as the content and your call to action on it.
Did you target your core demographic? A mailing list doesn't really tell you much other than provide you with addresses. If these end up in the hands of people that have no need for your service, it really wasn't effective.
If you have already mailed them, target your results. When you receive calls, ask every caller how they heard of your business. You will learn very quickly if you have a good return rate and then you can determine your ROI.
The key to mailers is repetition. One mailing will produce small returns. You have to target your customers, and then send them repeated cards.
Hoped I helped...