The AGC has a pretty good collection of information on the reverse auction process for contracting companies. Go to :
www.agc.org On the right side of the page is a pulldown menu for quick links. Click on reverse auction. They have a boatload of info.
The reverse auction was invented for procurement people who have to buy widgets. When it comes to demolition it is like fitting a square peg in a round hole. It assumes right from the get go that all contractors are identical in terms of the quality of service they can provide, which we know is not the case. Some of the worst contractors out there have the best promotional material and can fly through the prequalification process, but then when it comes time for them to perform the project they show up on site with a donkey and a root rake.