Don't forget to mark it up. You don't want to get hung on a job where you lose money.
If it were me, I would add 25% to your total cost. So, you don't get the job. At least you did not lose anything except the job.
You need to become a salesman of sorts in this type of scenario. Why you are higher than others and why quality and craftsmanship are just as important as price.
I have lost jobs over price. But it's part of doing business.
