Hi John,
Sounds like you are getting a good response with this leaflet , well done! i have always struggled with leaflets and got a terrible result with the last lot , it was suggested to me that it was because there was no incentive eg 50% off or £5 of blah blah blah , i noticed yours dont have any incentive either but your still getting good results , have you done previous drops with an incentive or different design/format to these and got differing results?