Average return? It does vary depending on the offer, time of year, etc. But an average of 4 to 1 return I'd say. Some are getting 10 to 1 or even 12 to 1. While others may only get a 2 to 1 or on rare occasion 1 to 1.
Early spring, late spring, summer, fall, have been the best. Winter is good if you make a REALLY good offer.
To see one of the really good responses I've got in my own company, see the video at
http://www.hitmanadvertising.com/EDDMbasics Fast forward to 22:17.
I don't like % off too much. One reason is that everyone else does it. Second reason is you are reducing your profit margin from the start.
Buy one get one has done so-so. The best is to give away extra cleaning freebies. Charge regular price, but give away extras like free tile cleaning, rug cleaned, etc. to cross sell and get higher job tickets.
Three sequence and third is the charm? Yes, to some extent. The second mailer always gets more coming in. The third does pretty good too
The mailer has always been best when it hits the home Tuesday, Wednesday, or Thursday.
If the owner is going to be on the truck, I've found it's usually better to put a picture of the owner with the impression that he is directly involved in the company. It's not necessary to make it look like it's a bigger company.
Stanley isn't doing EDDM in my area. Anyone else seen Stantley or other franchises do EDDM?