When you call a service supplier..................do you honestly not ask what the service will cost, or at least ask for a guide to their charges.
I recently needed the services of a gas fitter and after confirming, they would carry out the work, I asked the obvious and normal / usual question.
" Can you give me an idea of what it will cost ?"
As I never advertise ALL of my work comes via the phone and some ask, what will it cost. Most are repeats and expect the price to have gone up a little, others are referrals and, although referred, don't necessarily have a clue about the cost involved.
My response is always,,,,,,,,,,,,,,,,,,,,,,,," when can I call to have a look " unless it's clearly a small job, in which case, I give a " about £x and should be no more than £y.
Been caught out a couple of times...................but, I always stick to my word.
Final word................there are people making a damned good living, by charging half, what some of you claim to charge.