I have something to add to this conversation.
I just recently had the -whole real deal- done to my house. New roof and gutters. They were not cheap but I am moving on with a sound company that will stand by their effort.
When I started shopping -my interest was focused on the product. I did not want to endure the huge drain of dealing with the low bidders. (effort/time/frustration/etc all has value to me)
Maybe I am at a place where I just don't want to spend ten dollars just to save five dollars.

In my case I am happy--I got what I ordered and my only calls are about any issues I have that will promptly be dealt with by proper contract from the upfront connection.
A low bidder hangs his hat on price. --A quality bidder hangs his hat on the product.