Wooden Pergola Negotiating An Extention ($$) To Our Wooden Deck.........?

Negotiating an extention ($$) to our wooden deck.........? - wooden pergola

We have a pool, new and want to expand our existing coverage. Add 2 I have estimated a set of 10x12 and 10x14, our existing coverage areas, the establishment of a journey 36 ', and the construction of a pergola at the top of our existing 10x14 deck. Both estimates are very similar included. One of the builders of the cover is an old friend who work for parents, my wife has done for years, I would give him a chance to match other constructor slightly lower cost estimates. Question: Is it ethical to do so on my first Bridge Builder # 1 (do not know this man, but their work seen and is very good) and tell them that you are competing against a friend of the family (builder # 2) and allows the possibility of reducing the estimated cost? If so, then I approached # Builder) 2 (friend of the family and asked the producers to play # 1's estimate.