ask yourself one question, if you got a leaflet through and it only had a mobile number on it, would you call?
i advertise both mobile and landline and i would say 80 to 90% of enquiries go straight to the landline first. but then, they do have a choice. think you'll just have to keep your fingers crossed.
as for straight away, you should get half your total enquiries in the first week, another 30% within a month and the rest in dribs and drabs over time, (these aren't facts, just an educated guess from own experiences) got a job booked today from a leaflet i put out well over 6 months ago.
think shauns right in saying, this is probably the best time to get a good return on your leaflets, we achieved 7 enquiries per 1000 last nov/dec. but then we tried again in jan/feb and got zero. zilch. nottin. booger all.
would be intersting if you could quickly get another 6000 out with both numbers on and see the difference in responce.
derek