The key to Facebook is volume, don't mess about with a handful of enquiries, you need a response like this.
That's 41 enquires, from 1 post to 1 group which took all of 5 mins to type out... There's are dozens of groups in my area, granted this is one of the biggest ones.
Of course you get messers, I don't take on every enquiry.
They send pics of their house and I give them a quote.
Yes you are right, half of them don't reply when you give them the price. So what I don't want those that won't pay my prices.
That leaves me with the ones that accept to go at.
If you get a phone call you are likely going to have to physically quote them or ask for pics or just guess, how is that less labour intensive that sat at home on your phone.
How much does 600k leaflets cost to be delivered?