Advertising is not a cost but an investment! Try YP which is part of at&t. They're direct mail program has heavy filters to increase results plus postcards very professional. Think of it this way, if u send postcard on carrier route with post office your sending those to apt complex renters, maybe home renters ( which isn't always ideal) and all kinds of demographics/ages. They can send them to homeowners making certain income, certain age, and realize they of all people would have most accurate records.
They have Internet advertising, and I'm here to say print display ads work, I'm used them and seen the results. They even have tracking on des to prove it!