I am frustrated myself. But maybe I am just tired.
Some people just endlessly call and get quotes. At Most: only one person gets the job. People who get a dozen quotes are price-shoppers who will just take the lowest price anyway. Which is not me.
So what am I bothering to go out and waste my time for? It's no joke: Take time, go out, size up the job; requirements, customer interests, access, etc. Then measure the building, do all the load calcs, price out the job, and get it into a formal form. By the time I'm accurately done - I've got half a day in it.
Times Twelve Quotes - that's a week's labor with a few hours of overtime to complicate a weekend. No problem - we'll eat that for you. We are thrilled just to be able to wear out all our old clothes.
AND; how many times have I presented something detailed and the customer then shops my design around looking for what? Why of course: a lower price. So what Am I? The local charity design engineer? People seem to have no problem with stealing my ability. But try asking them to pay for the design fee. and see how fast they reach for their wallet. <g>
Hell; I've had them call repeatedly and ask for additional details - with questions which could only have come from a competitor. Or from their son or brother-in-law who's going to a tech school at night. <g>
I don't blame 'estimaters' for just tossing numbers at a job. If it's all going to be a dart-board numbers-game anyway - why spend any more time than that on it?
Of course maybe I'm just cynical and crabby right now. <g>