I actually live near yarm were house prices are a huge increase from anywhere else in the area!And the company makes money because they get 4 or 5 leaflets to distribute at once, so if everyone did £10,000 leaflets then the owner would charge £1000...
one person can do 100-120 leaflets per hour on mixed but fairly compact residential .if they say they are doing more they are lying .they can't possibly charge £20 per thousand , pay people to deliver and make a profit .i would suggest a lot of your leaflets are dumped .
its not down to how many calls you get it all about the money you earn from it 1 call could earn your 2k yet ten may just earn you 100 pounds you will have to wait 2 months and see how much cash you have made from it , to see if its been worth doing