done 10-000 for window cleaning side -i think it was in the region of 115 inquiries
also
5000 for commercial cleaning got 17 inquiries and got just under 2000 quids worth of work from it and still pricing some at the moment
also done 5000 myself got 45 inquiries in total
leaflets work well for me pay about 40-50 quid / 5000
dont use any other advertising apart from sticking leaflets in shop windows etc
he also does car window screens for me