Roger:
You said that you can’t afford to do a mailing more than once a month. Even at 26 cents a piece, I believe that you can’t afford not to mail more than once a month. If you sent out 2000 post cards a week, it would cost you $520. Lets low ball it and say you get around a 3% return. That would give you 60 new orders. Now lets say that the average ticket is $18. This will give you $1,080 in sales. Your coupon offer will probably run a food cost of around $2 a coupon if it is an aggressive offer. So your food cost will run around $120 for the 60 returned coupons. The total cost of your mailing will be $520 + $120 = $640. Your profit will be $1,080 - $640 = $440. That’s an extra $440 that you wouldn’t have had if you didn’t do the mailing. Now if you end up getting a 5% return, your profit will be $1,360!
This is all solid philosophy, and I agree with it. The only difference is that the scale of magnitude changes when your ENTIRE MARKET is 1800 homes. That’s the entire pond to fish in . . . .not just a segment of that pond. 60 returned coupons will not mean 60 “new” orders or guarantee new customers will be in that batch.
Small market marketing is a little trickier for me than dumping things into neighborhoods and counting the money that rolls in. We have a longer realization of return in our small town of 2500 people. We pop our name out there over and over until people decide to come in . . . we are confident that every marketing effort pays for itself (based on some math), but cannot be certain of long term value for a few months afterwards.