Is $17,240 to replace structural wood treated beam a fair price?

Contractor 2 assessed the existing twisting beam as needing complete replacement, disagreeing with Contractor 1's view that it was fine. This quote covers: - Complete replacement of the twisting beam with a much larger one - Associated labor and other necessary materials

Replace deck flooring and perform structural repairs on a 16' x 22' deck. - Remove existing wooden deck flooring - Replace 3 deck joists - Install 3 6x6 support posts with 80 lb. concrete footings - Add 2 additional joists between new support posts for reinforcement - Install 50 premium 16ft deck boards - Includes all hardware (joist hangers, bolts, washers, nails, and screws) - Includes removal and disposal of old wood and site cleanup - Excludes stairs and railings

This quote involves the comprehensive replacement of existing cedar deck boards with composite material for a deck approximately 1,000 sq ft in size. The project also includes addressing a significant structural issue concerning a missing beam at the transition point where the deck steps down to a second level. Two distinct approaches were proposed for this structural repair: - Solution 1: Install a new beam along with a row of concrete footings and supporting posts. - Solution 2: Eliminate the stepdown/multi-level design by raising and extending the existing joists, and installing taller posts at the end of the deck.