I agree, Richard, but the thing is, I don't want to talk to them. I have a price at which I want to clean. I'm never going to go below it; anyone who's only interested at a lower price is never going to be a customer of mine, so I'd be wasting time talking to them.
There's another advantage as well. Lots of people (my wife for one) don't call someone if they have no idea of prices. With prices on your leaflets, you get those calls.
My response rate is pretty much identical to everyone else who leaflets on here, so I think that the extra callers form the second point must balance out the cheapskates...
Vin