If you go through post office site it has a nice route breakdown.I would have 5000 printed up and saturate your targets.To keep cost down you have to have a good print guy. My guy gets my business cards, rack cards, door hangers, wraps, signs etc..Once they have your artwork layout it's alot easier to import these designs to other projects.I wanna say it cost between 22/26 each delivered. I had more like 10 per thousand. Doesn't sound good but once the neighbors start talking the phone will ring a little more. Rougly $25 to book a 3/400 job seems good to me. I would only do a few routes at a time. The chamber of Commerce is ok but didn't pan out for me. I would also recommend non ethanol gas stations. They usually have a billboard they'll let you tack up some cards.Also most upscale neighborhoods have their own llttle neighborhood paper that are cheap to advertise in. I would also focus on small boat repair shops too.