Post Card I closed 27 accounts out of 5,000 or just a little over 0.5%. My per card cost is $ 0.205 per card including printing. But because Florida has so many Snow birds the Post office returned and credited those addresses that forwarded to the North. So doing the Math 5,000 mailers cost me a total $ 1010.00 and divided by 27 accounts that cost me $ 37.41 each. In my case Every one including Businesses need Pest Control here in Florida. But with the EDDM Plan you can skip Business addresses. One other advantage to doing the EDDM myself was Mailing only a 1,000 post cards each week and only having to deal with approx 10 sales calls a week. I even skipped a week here and there because I was too busy to deal with sales calls. Yes you have paid for a Bulk mail permit that wouldn't be economical for me to buy. That Permit allows you to target customer more selectively than EDDM. But running the Numbers my labor and shot gun advertising is not only effective but half what you charge. .