An RFP differs from a hard bid. The low price does not win by itself. The owner scores each proposal against criteria listed in the RFP.
A design-build athletic field project may ask for a price, a schedule, staff resumes and three similar projects.
Read the scoring criteria first. Answer every item in the order the RFP asks. Missing pieces lose points and can disqualify the proposal.
Your quantities still matter. A price built on a weak takeoff hurts you after award, whatever the score.