I understand and fully support your way of doing business, Jill. That's also what we do most of the time. Still, I'm talking about a different approach than what I think you are figuring into the equation.
I'm talking about the many many times we all quote out a job, doing it the way we would do it for ourselves or our best customer.... the best of materials, the finest details and proper composition all being priced at a very fair market price.
However, Joey down the street quotes the guy about 1/3 less. He comes back to you and says why can he and you can't. Now comes the educational part of being a salesperson which I referred to as bickering or haggling. It's not always done in a negative manner. I proceed to tell the customer, that after 40 years or however long one's been at it, you know Joey can't do it for what you're quoted. Simple as that. Joey must be using PVC while I'm quoting aluminum composite and I'm quoting using high performance vinyl and I'm finishing off the edges. Joey's not doing that. Therefore, you have a sign, if I used those substrates and lower end vinyls, I too, could produce it for less.
Knowing this, you must decide if you want a higher end sign.... or a much lesser in value sign. There's no other way Joey can produce this sign for that price. Sure we could be a few dollars off if we are comparing apples to apples, but not a 1/3. No sir, I know my business and I know it can't be done for that lower price without cutting back drastically on supplies.
Many times, a potential customer just takes the cheaper price, not knowing he's being bamboozled. That's why, if they come back and give you a second chance, you should win the bid for having superior products.... or you just drop your costs of materials by substituting to what he wants.
This also happens when a customer has already been to the cheap shop first and when he gets your price, it helps to be able to say these things without missing a beat. This is where it's called up-selling your wares. It's a part of business and the American way. If you've gotten through life without doing it, good for you.
As for wasting time, it takes a few minutes to haggle and reach a decision.
In fact, my wife never did it..... until she met me and was amazed at how easily it works. I'd never buy insurance, a vehicle, a home, an air conditioning unit or anything without doing this first. I draw the line on one area..... I don't haggle at all when it comes to food I will be ingesting.